Sundial diptych in ivory. Work attributed to Charles BLOUD ( - Lot 204

Lot 204
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Estimation :
2000 - 3000 EUR
Sundial diptych in ivory. Work attributed to Charles BLOUD ( - Lot 204
Sundial diptych in ivory. Work attributed to Charles BLOUD (1653-1699), Dieppe, circa 1670-1700. Side A (cover) : equatorial and polar sundials. Side B : discs converting lunar time into solar time and perpetual calendar. Side C : Compass with latitude table and tin analemma. Side D : Mobile calendar for the adjustment of the azimuth dial. Body of the base broken, in two parts. 1,8 x 8,5 x 7,8 cm
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