Rare CHATELAIN 18K Coin 10 Dollars Watch, Ref. 6068, Cal. F. Piguet 21, 1960s
Concealed inside 30mm coin: a small manual wound watch that is only accessible by pressing a push button. After carefully pressing the button, the hinged top obverse side will then reveal a beautifully finished swing-out watch with winding crown at 1 oclock. Features ultra-slim manual wound movement made by Frédéric Piguet (Blancpain) calibre 21. This…