Swiss 18k gol and enamel diamond set ring watch Circa 1780

Gold and enamel cylinder ring watch
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An important and very rare cabriolet miniature ring watch with finest enamel painting, diamonds and gold/enamel key, original enamel box, probably Pierre Morand Genève, circa 1780. An 18K gold, sides of ring original set with diamonds, top of the ring hinged/liftable, removable miniature Lepine, faced with original rose-cut diamonds, finest enamel painting with ladies portrait on back, miniature movement with cylinder escapement, enamel dial, blued steel hands, corresponding original key, Breguet type with ratchet, also with blue enamel and in very good condition, watch in excellent original condition, unique enamel box with enamel painting, real rarity, probably made by Pierre Morand, Geneva.
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Diameter: 19 mm
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Weight: 15 g
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Signed: Pierre Morand Genève
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This watch is one of only a few noted and still existing pieces of this type. A comparable and signed piece was sold in Genèva auction 1998 for 168.500 SwissFrancs and is now part of the Patek Philippe museum collection. Another comparable piece but a more simple version was sold in Geneva 2006 for ca. 95.000 SwissFrancs.  This watch is a real rarity!