1977 Audemars Piguet Royal Oak II 18k Yellow Gold Grey Dial 8638BA 1972 This example is a prototype

This example is a prototype made by a student and labelled "École d'horlogerie de Genève" as well as certified COSC

and historical significance within Tudor’s chronograph lineage make it especially prized among collectors

making it a highly sought-after treasure

this dial configuration is a coveted detail among enthusiasts

the watch features the distinctive rounded silhouette and whimsical crown cap that give the Diabolo collection its name

1977 Audemars Piguet Royal Oak II 18k Yellow Gold Grey Dial 8638BA 1972 This example is a prototypeAn absolute true gem! A fantastic condition 1977 Audemars Piguet Royal Oak II Automatic in 18k yellow gold reference 8638BA with a perfect grey dial with matching hands. The Audemars Piguet Royal Oak II Automatic, reference 8638BA, is a rare and refined expression of the iconic Royal Oak design, presented in a compact 29mm case crafted entirely from 18k yellow gold. This particular example stands out with its perfect grey tapisserie dial, elegantly