Piaget Miss Protocol in 18k white gold with original diamond dial and lugs on a gold bracelet. Quartz. 17 mm case size. Ref 5222. Circa 1990s. Fine Pre-owned Piaget Watch. Certified preowned Dress Piaget Protocol 5222 watch is made out of white gold case and bracelet. This Piaget watch has a 17 x 19 mm case with a Rectangle caseback and Silver Diamond dial.