Lot 525

A collection of 14 sun watches
Derepas à Paris, Palais Royal no. 24, 320 mm, circa 1830
Noon cannon sun dial on a signed and engraved marble base
The cannon was loaded every day and designed to fire at noon. A mounted lens was set to focus the rays of the sun on the firing pan loaded with gunpowder at exactly noon and igniting it.

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