This calendar medal, in gilt brass, gives the dates of sun and moon eclipses, as well as the dates of new and full moons.
Ask the Dealer
Ganymede Antiques, established in 1992, is based in Muswell Hill, London, U.K. We specialise in scientific instruments from the 18th and early 19th centuries, with particular interest in sundials, and drawing and calculating instruments. We are always keen to buy interesting instruments, and entire collections. We exhibit at the twice yearly International Antique Scientific Instrument Fair in London. Keith Petts can be contacted at firstname.lastname@example.org