5th May, 2022 10:00
The Collectors Sale
An Ivory Excise Officer's Slide Rule
English, c.1890, signed T O Blake Ltd London, double sided with two slides, with multiple scales for proof and duty payable in shillings, gauge points for imperial gallon and imperial bushel, scales for part-filled barrels (segment standing, segment lying), etc., nickel silver fittings, length 32.2cm [CITES]
Sold for £81
Result plus buyers premium
English, c.1890, signed T O Blake Ltd London, double sided with two slides, with multiple scales for proof and duty payable in shillings, gauge points for imperial gallon and imperial bushel, scales for part-filled barrels (segment standing, segment lying), etc., nickel silver fittings, length 32.2cm [CITES]
Auction: The Collectors Sale, 5th May, 2022
