both English, late 19th century, in mahogany cases with boxwood stringing and ivory name plaques, one by Negretti & Zambra with ivory thermometer and two boxwood slide rules; one by Thomas Armstrong & Brother, with ivory thermometer by Loftus and two ivory slide rules, cases 25cm [CITES]
Sold for £88
Result plus buyers premium
both English, late 19th century, in mahogany cases with boxwood stringing and ivory name plaques, one by Negretti & Zambra with ivory thermometer and two boxwood slide rules; one by Thomas Armstrong & Brother, with ivory thermometer by Loftus and two ivory slide rules, cases 25cm [CITES]
Auction: The Collectors Sale, 5th May, 2022