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National: Typewriter Serial Number Age List

Serial Number Table Last Edited: 07/29/16 11:24
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.

Models and s/n Y   Remarks Ref.
    Patents:
US326178
Filed Apr 9, 1885 • Issued Sep 15, 1885
US400146
Filed Mar 14, 1887 • Issued Mar 26, 1889
US449640
Filed May 19, 1887 • Issued Mar 31, 1891
US472836
Filed Mar 11, 1886 • Issued Apr 12, 1892
US490235
Filed Jan 23, 1889 • Issued Jan 17, 1893
US507189
Filed Nov 7, 1885 • Issued Oct 24, 1893
US560244
Filed Mar 14, 1887 • Issued May 19, 1896
US569255
Filed Apr 11, 1891 • Issued Oct 13, 1896
US570522
Filed Nov 16, 1889 • Issued Nov 3, 1896
US605032
Filed Feb 11, 1890 • Issued May 31, 1898
US613178
Filed Nov 7, 1888 • Issued Oct 25, 1898
Typewriter inventor Henry Harmon Unz began the National Typewriter Co. 715, 717 and 719 Arch Street, Philadelphia, Pennsylvania USA in 1889 to manufacture this design created with famed designer Franz X. Wagner of Underwood. Unz continued to file patents for improvements on the design until 1891.
Cast iron frame, often found with a break at the point where the rear of the body meets its base at a right angle. The space bar is removable, and the absence of same decreases the value of the machine. Said to be noisy, with a heavy touch.
There is no connection between this manufacturer/design and the 1916 National portable.
5,16,27,61,65,78
Early (1a) 1889-1890 Three row double-case blind upstrike. Double shift moves entire keyboard toward and away from the typist and print point. Platen length: 8.5", Ribbon: 1/2". Weight 13 pounds, dimensions: 9 x 12 x 7 1/2" high. 27 key curved keyboard, black composite keys with white inlaid characters, prints 81 characters. Offered for $60. 5,16,27,61,65,78
Late (1b) 1891 Three row double-case blind upstrike. Platen length: 8.5", Ribbon: 3/4". Weight 13 pounds, 29 key curved keyboard 85 characters. Full-width space bar. 5,16,27,61,65
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