IDENTIFIERS ----------- id: 201789 accession number: M/P.107-1913 DATE AUDIT ---------- created: Tuesday 9 June 2015 updated: Wednesday 14 March 2018 DESCRIPTIVE DATA ---------------- object type: Gold and silver disc perpetual calendar Calendar: Small silver body with gold discs calendar with supporting ring. Front with gold disc engraved across, between lines, with the planetary symbol for the day, followed by the day of the week in English. Sunday is at the top, a pin at the edge of the disc at the start of the Wednesday line, the edge of the gold disc opposite with cut-out at side to reveal circle of numbers, 1 to 31, engraved around the outside of the silver disc. Engravd pattern above, and below, the week. The support ring is fixed to a silver disc between 31 and 1. Reverse gold disc engraved with four circles, the outer just in from the edge. Between lines 1 and 2 are engraved the words 'PERPETUAL' and 'CALENDAR', with tapered aperture through all three spaces between, second tapered aperture through 2 and 3 opposite. Second space with knobs under engraved words on outer space and 'Night' and 'Day' engraved next to the apertures, day under perpetual. Third space engraved 'RISING' under 'perpetual' and 'SETTING' under 'Calendar'. Central silver disc engraved:- Space 1 JANY FEBY MARC APRI MAY JUNE 31 28 31 30 31 30 Space 2 8 9 11 13 14 16 Space 3 8 1/2 7 1/2 6 1/2 5 1/4 4 3 1/2 Space 1 (continued) JULY AUGT SEPT OCTR NOVR DECR 31 31 30 31 30 31 Space 2 (continued) 16 15 13 11 10 8 Space 3 (continued) 3 3/4 4 3/4 5 3/4 6 3/4 8- 8 3/4 title: watch LICENSING --------- text license status: CC0 image license status: CC-BY-NC-SA OWNERSHIP --------- instutition: The Fitzwilliam Museum department: Applied Arts collection: Frank Gray Smart creditline: Bequeathed by Frank Smart M.A. STABLE URL ---------- url: https://data.fitzmuseum.cam.ac.uk/id/object/201789 TECHNIQUES ---------- engraved CATEGORIES ------ category: watches DATING ------ culture: 18th Century CREATORS -------- maker: Unknown DIMENSIONS ---------- dimension: Diameter units: mm value: 21