18th Oct, 2019 12:00
Fine Photographica & Instruments of Science & Medicine
A Guthrie's Patent Gem Calculator
English, c. 1890-1895, card on wooden frame, for addition and subtraction of pounds, shillings, pence and farthings, instructions pasted verso.
Sold for £156
Result plus buyers premium
English, c. 1890-1895, card on wooden frame, for addition and subtraction of pounds, shillings, pence and farthings, instructions pasted verso.
Auction: Fine Photographica & Instruments of Science & Medicine, 18th Oct, 2019
