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Portex: Model Galleries


Portex: Typewriter Serial Number Age List

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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