Uploaded March 2022 | Updated September 2026, 1 hour ago

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The Countess adding machine is a very simple adding machine for British currency. It only does addition, not subtraction. It was made by Summira in Germany in the 1960s or early 1970s.

For more information on this and other machines in my collection, please visit my website:
jaapsch.net/mechcalc

0:00 Introduction
0:14 Columns for currency
1:11 Clearing
1:45 History
2:50 Opening the case
3:38 Carry mechanism
5:48 Outro