Perpetual calendar

Perpetual calendar made from a disc of silver with raised decoration. The tables of calendaric information similar to single year calendars, but usable for all years. The calendar is a type B.2 and the inscription reads "EASTER 1685" "W. FOSTER".

Object Details

ID: AST0641
Collection: Astronomical and navigational instruments
Type: Perpetual calendar
Display location: Not on display
Creator: Foster, W.
Date made: 1685
Credit: National Maritime Museum, Greenwich, London, Caird Collection
Measurements: Overall: .5 x 36 mm
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