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LicenseMechanical counter, Elm City Counter'
Science Museum Group
© The Board of Trustees of the Science Museum
Mechanical counter, "Elm City Counter", patented 1891 and made by The C.J. Root Co., Bristol, Connecticut, U.S.A.
Details
- Category:
- Mathematics
- Object Number:
- 1990-710
- type:
- adding machine
- credit:
- Auction Team Koln
