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Adler (Protos): Typewriter Serial Number Age List

Brand: Protos Also known as • Adler (Protos) • Klein-Adler (Protos)

Serial Number Table Last Edited: 01/1/13 04:15
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.

Protos          
           
           
Models and s/n Y M D Remarks Ref.
           
           
Portable          
           
Protos          
  1922     identical with Adler Model 7 4
           
           
Model E          
up to 6000 1922-1924     exchangeable typelever-set 4+7
           
           
Protos Portable 1924     same as Klein-Adler 3 row keyboard machine, but larger and minor technical differences, casing and top out of aluminium 4
  1925     production of all Protos Models ended  
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