Only twice in our watch collecting life we have ran into one of the most fascinating and unique timepieces made by Audemars Piguet. We are talking about the ultra rare Audemars Piguet Coin Watch in 18K yellow gold. As far as we know, these rare coin watches were created by Audemars Piguet between 1915 and the late 1980s. The coin watches were produced in very limited quantities and in different currencies including U.S. dollars, Swiss Francs, French Francs and Mexican Pesos.