Calculator age
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Calculators
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Age/Serial No.
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Yoko Tsuno
Franka
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Calculator age
Age/Serial numbers
This overview is an attempt to collect links to pages, that have information about serial numbers and age on mechanical calculators.
More links can be found on the
Links
page.
Comptometer
Serial numbers
Production periods for the different models
Facit
Serialnumbers and year
Facit family tree
Odhner
Odhner family tree
Serialnumbers and year