"Denominator" adder for American currency, key-ope

Made:
1920-1930 in Brooklyn

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Science Museum Group Collection
© The Board of Trustees of the Science Museum

Science Museum Group Collection
© The Board of Trustees of the Science Museum

"Denominator" adder for American currency, key-operated, made by the Denominator Adding Machine Co., Brooklyn, New York

Details

Category:
Mathematics
Object Number:
1990-689
type:
adding machines
credit:
Auction Team Koln