Piaget. A lady’s white gold, emerald, ruby and diamond-set ring watch, ref. 3657, circa 1976.
Movement: cal. 6N, manual winding.
Dial: pavé diamond-set.
Case: 18ct white gold, rear wound, back secured by two screws, rectangular mount set with emeralds, diamonds and rubies.
Signed: case, dial and movement.
Dimensions: length 33mm, width 25mm, ring size K1/2.
Accessories: presentation case.
£5,000-£7,000

According to Piaget, this stunning ring watch model is one of only three pieces produced between 1966 and 1976.
Piaget confirmed they have a similar example in their Private Collection.