Perpetual calendar

Single year, perpetual calendar made from bronze with gold-coloured finish. One side has a grid of the days of the month at the centre with three rings of writing around the edge. On the other side has five rings of writing and numbers with a sun shape at the centre.

Object Details

ID: AST0644
Collection: Astronomical and navigational instruments
Type: Perpetual calendar
Display location: Not on display
Creator: Simons, I.
Date made: 1716
Credit: National Maritime Museum, Greenwich, London, Caird Collection
Measurements: Overall: .0394 x 1.61 in.; 1 x 41 mm
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