The Typewriter Database

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National Portable Typewriter Serial Numbers

Brand: Harris Also known as AutocratHarry A. Smith (Harris Visible)National PortableReporters SpecialRex (Harris)Rex Visible

Serial Number Table Last Edited: 07/29/16 11:23
NOTE: dates shown are JAN 1 unless noted, so the serial number shown is the *first* serial number produced the given year. Exceptions are serial numbers preceded by "up to"(where you can assume that the numbers reported in that subsection are DECEMBER 31, END OF YEAR NUMBERS) or rows where a month is given in the month column. If the serial number is shown as a range (xxxx-xxxx) it indicates that we know the entire range of serial numbers for the given year.

        Harris Typewriter Co., Fond du Lac  
        Since 1914: Rex Typwriter Co., Fond du Lac  
        Since 1921: Demountable Typewriter  
Models and s/n Y M D Remarks Ref.
Standard Manual          
Harris visible          
  1911     3 key-row machine, 28 keys 4
Rex, Rex Visible, Rex Demountable Models          
  starting 1914     some Models sold by Sears 4
Rex Visible 1916-1922     A 3-row, front stroke visible made from 1916 to 1922. Sold until 1922 by American Can Company, Chicago, Illinois. Two-color ribbon, manual reverse, single key tabulator, backspacer, 11" carriage, removable platen. Model 4 was Standard machine, Model 4A had 2 extra keys, Model 10 had improved carriage, same became standard on Demountable. This machine with slight changes also known as Harris. 59
up to Model 10          
  1921     32 keys, some Machines already sold as "Demountable" 4
Demountable Model 1          
  1921     Started in 1921, 4 key-row 13

Demountable is made in sections, all interchangeable and replaceable. A latch at the rear of the machine allows the operator to remove the carriage, ribbon mechanism and outside frame as one assembly from the printing mechanism for cleaning or replacement. Wide and narrow carriages are interchangeable. Typebar assembly interchangable for foreign languages or special key sets.

Four rows, 42 keys writing 84 characters. Right and left hand shift keys. Shift lock, backspacer, margin release, tabulator key. Carriage mounted on caterpillar ball bearings (2 sets of 11 bearings mounted in frame so as to always present 4 balls in each set to the carriage rail). Rotary escapement, tabulator stops set from front of machine; right and left-hand line space lever with single/double/triple spacing, variable spacing and ratchet throw-off; right and left-hand margin locks. Paper table tilts forward to allow adjustment of margin and tabulator stops. 2-color 1/2-inch ribbon. Pica or Elite typeface.

Prices (1924):
Section 1: Type action unit, complete - $40.
Section 2A: base unit - $10.
Section 2B: deck unit with ribbon mechanism - $35.
Section 2: 11-inch carriage with way-rod assembly - $20.
Total price of assembled machine: $105.
Section 3: 14-inch carriage with way-rod - $30.
if a 14-inch carriage machine is originally ordered, and 11-inch carriage later desired, extra way-rod assembly is not required.
11-inch carriage without way-rod assembly - $18.50

Demountable Model 2          
up to 140000 1929     Started in 1925, since 1926 different carriage sizes 7,13
150000 1931       13
155000 1932       13
156000 1934       13
National No. 2          
  1917     The"National" was developed and built in the Harris factory, 3 key-rows, 28 keys, National No. 1 was never sold 4
        Model 2 was exported from Switzerland with the brandname "Express, later on sold in the U.S. as Portex and Crown, Nickel-models were available as well  
National No. 3          
  1919       4
National No. 5          
  1920     First 3 key-row portable with a shift key at each side, steel frame 4

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Reference numbers

* Indicates source data the current list maintainer has access to. Usually it means we have a copy of the document in question, but it might be in the form of a later edition list. However, for the purposes of validation we have been able to confirm the source.

No. Literature
1 * Century of the Typewriter, Wilfred A. Beeching, publ. by the British Typewriter Museum, 1974, 1990, ISBN 0951679007
2 * Joan Sales,"Date your Underwood Typewriter" - Website :, reference to Richard Polt
(note: The source for this article was at least partially Ref. #18)
3 Allowance Sheet 1918, made available by Andrew B. Schrader
4 Ernst Martin, Die Schreibmaschine und ihre Entwicklungsgeschichte(The Typewriter and the history of it's developement), publ. by Johannes Meyer Verlag and Basten International, 1920 to 1949 and reprints
5 * Darryl Rehr, Antique typewriters, by Schroeder publishing, Los Angeles, 1997, ISBN 0891457577
6 * Typewriter Age Guide, publ. by Office Machines and Equipment Federation, London, copies contributed by Mr. Bruce Beard, Australia
(note: this reference same as #28)
7 * "Liste der Herstellungsdaten gangbarer Schreibmaschinen" Listing of the production dates of commen typewriters), publ. by Wochenschrift für Papier, Otto Hoffmann Verlag, 1941, Berlin, copies contributed by Mr. Paul Roberts, Netherlands. Current copy from the collection of Ryk van Dijk, scanned by Marlies Louwes.
8 * Richard Polt, adapted from the book of Paul Lippman, American Typewriters: A Collector's Encyclopedia (1992) and corrected, based on a list publ. in ETCetera #4
9 "Fabriknummernverzeichnis" (Factory number Listing), booklet which could be purchased optionally with book reference No. 4, edition 1941, publ. by Johannes Meyer Verlag, Pappenheim 1941
10 "Fabrikationsdaten von Schreibmaschinen", listing of typewriter serial numbers for dealer's, 1942 and 1935, publ. by Carl Teege Verlag, Hamburg
11 Ames Supply General Catalog from 1949
12 Information contributed by Will Davis, see :
13 Liste der Herstellungsdaten deutscher und auslaendischer Schreibmaschinen, 10 Auflage, 1955, publ. by Burghagen Verlag, Hamburg (small book, pre-owned by the Adler Werke vorm. Heinrich Kleyer, Frankfurt)
14 Leonhard Dingwerth, Kleines Lexikon Historischer Schreibmaschinen (Small Lexicon of Historical Typewriters), publ. by Kunstgrafik Dingwerth, Eichendorffstr. 77, D-33415 Verl
15 * Office Typewriter Age List No. 26, publ. by Smith-Corona, by courtesy of Mr. Ron Fuller, Los Angeles, USA
(note: this reference same as #22)
16 * American Typewriters - A Collector's Encyclopedia by Paul Lippman, 1992, Hoboken
17 * National Office Machine Dealers Assoc. "Blue Book" (NOMDA), 1964, provided by Bill Wahl
18 * Remington Information Binder (The Sheridan Binder), 1950's to 1970's, provided by Richard Polt.
19 * Interview with P. Birchmeier, Aug. 2012, reported by Georg Sommeregger.
20 * National Office Machine Dealers Assoc. "Blue Book" (NOMDA), 1980, provided by Bill Wahl.
21 * VOSS Schreibmaschinen, 2012, published by Georg Sommeregger. (HFW Schramm 11th ed. 1962)
22 * Smith-Corona Age List #26, 1960, provided by Bill M.
23 * Shipman-Ward Office Machine Dealer's Line Book, Jan 1, 1954, provided by Bill Wahl.
24 * H.F.W. Schramm, Liste der Herstellungsdaten deutscher und ausländischer Schreibmaschinen, 11th edition, Hans Burghagen Verlag, Hamburg 1962 - copy provided by Georg Sommeregger. Additional copy from the collection of Ryk van Dijk, scanned by Marlies Louwes.
25 * P. Frensel, Die Entwicklung der ehemaligen DDR-Schreibmaschinen-Produktion (einschliesslich der bis 1945 produzierten Schreibmaschinen in diesem Gebiet sowie der Produktion ab 1990), in: Schreibmaschinen- und Bureau-Zeitung, Nr. 10/1999, Nr. 11/2000, Nr. 12/2000 (originally published in: Mannheimer Hefte für Schriftvergleich, Nr. 1-2/1999) - provided by Georg Sommeregger
"The development of the former GDR typewriter production (including typewriters produced on its territory until 1945 and production after 1990)"
26 * "The Writing Machine (A history of the typewriter)" Michael H. Adler
27 * "Antique Typewriters from Creed to QWERTY" Michael H. Adler
28 * Typewriter Age Guide, publ. Dec 1973 by Office Machines and Equipment Federation, London, copies contributed by Mr. Peter Brill, Australia
(note: this reference same as #6)
29 * Typewriter Age Guide, publ. Oct 1971 by Office Machines and Equipment Federation, London, copies: T. Munk with the assistance of Mr. Rob Bowker, UK
30 * Typewriter Age Guide, publ. Oct 1980 by Office Machines and Equipment Federation, London, copies: T. Munk with the assistance of Mr. Rob Bowker, UK
31 * The Business Machines and Equipment Digest, publ. 1927 by Equipment-Research Corporation, copy contributed by Mark Adams.
32 * R. Blickensderfer and P. Robert, "The Five-Pound Secretary. An Illustrated History of the Blickensderfer Typewriter", publ. 2003 by The Virtual Typewriter Museum, excerpt contributed by Georg Sommeregger.
33 * Matricolario Olivetti, copy contributed by Enrico Morozzi.
34 * Olivetti Graphika Serial Number List, compiled by Domenico Scarzello.
35 * Liste der Herstellungsdaten deutscher und auslandischer Schreibmaschinen - 1950. By Carl Teege, Published by Hans Burghagen Verlag. From the collection of Ryk van Dijk, scanned by Marlies Louwes.
36 * Liste der Herstellungsdaten deutscher und auslandischer Schreibmaschinen - 1953. Published by Hans Burghagen Verlag. From the collection of Ryk van Dijk, scanned by Marlies Louwes.
37 * National Typewriter and Office Machine Dealer's Association (NOMDA) Typewriter and Adding Machine Allowance Schedule, February 1, 1941. From the Collection of Tony Casillo, contributed by Richard Polt.
38 * Wyckoff, Seamans & Benedict. Remington Standard typewriter. New York : Wyckoff, Seamans & Benedict, [188-?], accessed from the Baker Library, Harvard Business School.
39 * Documented Hammond Serial Numbers, V.4 Jan. 1, 2013 through V.7 Jul 20, 2017, Compiled by Peter Weil.
40 * Blick Billheads With Serial Numbers, Compiled by Peter Weil.
41 * Olympia, USA "Allowance Sheet T-58" (approx 1977). From the Collection of Tony Casillo, contributed by Richard Polt.
42 * IBM Typewriters Serial Numbers 1946 to 1977, Montreal Branch - IBM Canada Ltd. Contributed to Yahoo GolfBallTypewriterShop group by Jacques Coulombe.
43 * Xerox Factbook 1987
44 * IBM Selectric Adjustment & Parts Manual S241-5939-2
45 * Brother Service Update #31, June 20, 1985
46 * Brother Letter #0203 (10/1979) "How to Determine In-Warranty Typewriters"
47 * Brother Service Manuals and Addendums 1974-1990 "The Edsel R. Sanders Collection"
48 * National Typewriter and Office Machine Dealer's Association (NOMDA) Typewriter and Adding Machine Allowance Schedule, 1977. From the Collection of Tony Casillo, contributed by Richard Polt.
49 * Brother Group Corporate Profile, 2014
50 * Victor Standard Typewriters, By Will Davis
51 * Die historische Entwicklung des Bet riebes Optima Erfurt (2008), by Eberhard Lippmann. Contributed by Vilhelm Dromberg
52 * Corona: The Personal Writing Machine, by S. L. Johnson
53 * Standard Folding Typewriter by Richard Milton
54 * Collect Folding Coronas, by Paul Lippman
55 * Smith-Corona Parts and Service Manuals (1947-1999) lent by Bill Wahl
56 * Europe - Oliver - SIM - MAS small typewriters, by Georg Sommeregger.
57 * The Montana line of Hermes clones, by Mark Adams.
58 * The Hermes Baby page!, by Georg Sommeregger.
59 * American Digest of Business Machines, 1924. Contributed by Richard Polt.
60 * "MTE-INV" Mesa Typewriter Exchange Stock Inventory Records 1950 to 1987. Contributed by Bill Wahl.
61 * "Mechanical Typewriters - Their History, Value, and Legacy" by Thomas A. Russo.
62 * "The IBM Model B typewriter" by IBM.
63 * "Remington Portables" by Richard Polt.
64 * "Moskva and Janalif Research" by Alex Sandler. (plus updates)
65 * "Collector's Guide to Antique Typewriters" Dan Post, Post-Era Books, 1981.
66 * "The Unknown Writing Machine" Don Sutherland in The Antique Trader, 1978.
67 * "Don't Mind My Insanity: Updated Fox Serial Numbers" by Tyler Anderson.
68 * "A Very Good Year for Adler Favorit 2's" by Robert Godlieb.
69 * "FBI Forgery by Typewriter: Re-Examining the Alger Hiss Case - How Did His 1927 Woodstock Become a 1929 Model?" by Robert Messenger.
70 * "The Littlest Typewriters: Bennett's Bantamweights" by Robert Messenger.
71 * "Re: [TYPEWRITERS] Bennett Typewriter on Yahoo Typewriter Forum" by Thomas Furtig.
72 * "Sabb Schreibmaschine" by Georg Sommeregger.
73 * "Discovering the Studio Musicwriter" by Theodore Munk.
See: Etcetera #109 (link when available)
74 * "The Story of the Typewriter 1873-1923" Herkimer County Historical Society, 1923.
75 * "The Early History of the Typewriter" by Chas. E Weller (1918).
76 * "Old Typewriters" by Duncan James (Shire, 1993).
77 * "Williams Typewriter Research" by Tyler Anderson, 2016.
78 * "The History of the Typewriter" by Geo. Charles Mares (Gilbert Pitman, London, 1909).
79 * "Emerson Typewriter Research" by Tyler Anderson & Peter Weil, 2016.
80 * "The Emerson: The Enigma of Typewriters" by Robert Messenger.
81 * "A History of the Three-Row 'WILLIAMS' Typewriters" by Richard E. Dickerson in Historische Bürowelt No. 21 April 1988, and No. 22 July 1988.
82 * "Typewriter Topics: Vol. 50-52 1922" by The International Office Equipment Magazine.
83 * "Typewriter Topics: Vol. 6-7 1907" by The International Office Equipment Magazine.
84 * "Typewriter Topics: Vol. 38-40 1918" by The International Office Equipment Magazine.
85 * "Typewriter Topics: Vol. 41 1919" by The International Office Equipment Magazine.
86 * "Typewriter Topics: Vol. 29-32 1915" by The International Office Equipment Magazine.
87 * "The Victor Standard Typewriter" by Will Davis.
88 * "On This Day in Typewriter History: Trying to Unravel the Victor Mystery" by Robert Messenger.
89 * "The Franklin Typewriters" by Richard E. Dickerson in ETCetera #1 October, 1987.
90 * "On This Day in Typewriter History (CVI)" by Robert Messenger.
91 * "the Garbell Portable Typewriter" by The Garbell family.
92 * "Garbell Typewriter" by Greg Fudacz.
93 * "Fox Visible Typewriters - An Overview " by Will Davis.
94 * "Fox Portable Typewriters and the Demise of Fox Typewriter Company " by Will Davis.
95 * "The American Stationer" 1906.
96 * "The American Stationer" 1907.
97 * "Franklin Typewriter Ephemera" collected by Peter Weil, 2016.
98 * "A Bennington Letter" collected by Martin Howard.
99 * "Filing & Office Management Magazine" Volume 6, 1921.
100 * "Filing & Office Management Magazine" Volume 7-8, 1922.
101 * "Typewriter Topics: Vol. 35-37 1917" by The International Office Equipment Magazine.
102 * "Typewriter Topics: Vol. 44-46 1920" by The International Office Equipment Magazine.
103 * "On This Day in Typewriter History: Unearthing the Molle" by Robert Messenger.
104 * "It's pronounced 'Mollie'" by Mark Adams.
105 * "The Iron Age, Volume 79 - 1907".
106 * "Office Appliances Volume 36 - July 1922".
107 * "Office Appliances Volume 34 - July 1921".
108 * "The American Pocket Typewriter and Wellington Parker Kidder's Rochester" by Robert Messenger.
109 * "Crouching Tiger, Hidden Details - The early days of the Noiseless Typewriter" by Ed Neuert.
110 * "The Merritt" by Will Davis.
111 * "Yatran The Heaviest" by Alex Sandler.
112 * "Moskva 3 and 4 age lists as of 10-2016" by Alex Sandler.
113 * "Portable Typewriters Today - February 2015" by Will Davis.
114 * "The Early Bar-Lock" and "Bar-Lock Typewriters - Models 4 to 15" by Bert Kerschbaumer.
See: ETCetera #98 & #114
115 * "AMES Supply General Catalog #10 - March, 1960".
116 * "AMES Supply Parts Catalog #11P - Feb., 1965".
117 * "The Amazing Masspro Portable Typewriter: 'Grandson' of the Standard Folding" by Robert Messenger.
118 * "Masspro Typewriter Page" by Greg Fudacz.
119 * "Carl P. Dietz Collection of Typewriters", by George Herrl, 1965.
120 * "Royal Paint Touch-Up Color List", Rev. June, 1968.
121 * "Olympia SM series (part 1, 1948-1964)" by Nick T.
122 * "Olympia SM series (part 2, 1964-1980s)" by Nick T.
123 * "AMES Supply General Catalog #5 - August, 1940".
124 * "1975 Smith-Corona Model Prefix Guide", Discovered by Jonathan Kinser from Smith-Corona research.
125 * "Evolution of the Typewriter", C. V. Oden, 1917.
126 * "1912-1923 The Origins and Evolution of the Typewriter" Various Authors.
127 * "The Swedish Densmore Typewriter" by Robert Messenger.
128 * "All or Nakajima" by Steve K.
129 * Smith-Corona Series Estimates researched by Nick Bodemer, 2017
130 * Research by Peter Weil, and ephemera from The Cornelia and Peter Weil Typewriter Archives