Brand: National Portex Also known as • Crown • Express (National Portex) • Harry A. Smith (National Portable) • Portex • Warner
Serial Number Table Last Edited: 11/15/15 12:14
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.
|National (Portable), Portex||Rex Typewriter Co., Fond du Lac, Wisconsin|
|1918 the American Can Co. of Chicago took control of the company|
|In 1920 the National Typewriter Co., Fond du Lac, Wisconsin assumed control of the company|
|Many name variants: National Portable, Express, Warner, Crown, Portex|
|Models and s/n||Y||M||D||Remarks||Ref.|
|National No 2|
|up to 3000||starting 1916||Estimated from known serial numbers||-|
|National No 3 and "B"||Manufactured by the American Can Co. of Chicago, Model "B" for export||16|
|4000-15000||1919||Estimated from known serial numbers||4|
|Portex or National 5|
|15000-23000||ca. 1920||Estimated from known serial numbers.||4,16|
|Nickle plated models are known with serial numbers over 20000||-|
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