Audemars Piguet Quantieme Perpetual Calendar. Discover the fascinating story of the audemars piguet quantième perpétuel calendar watch and its role in overcoming the quartz crisis. Compare deals and buy a ref.

Audemars piguet quantieme perpetual calendar 25657, 25657ba.00.a002xx.01, 18k yellow gold case on a strap with a matching 18k yellow gold tang buckle, automatic. When audemars piguet teamed up with gerald genta to design royal oak in 1971 and 1972, they could not forecast the commercial success the watch would bring.