Robuta

https://www.christies.com/en/lot/lot-5091587?ldp_breadcrumb=back AUDEMARS PIGUET, "QUANTIEME PERPETUAL CHRONOGRAPHE"VERY RARE, 950 PLATINUM AND DIAMOND-SET... audemars piguet quantieme perpetual very rare https://www.christies.com/en/lot/lot-5091605 AUDEMARS PIGUET, "QUANTIEME PERPETUEL"A SET OF 18K GOLD SELF-WINDING PERPETUAL CALENDAR WRISTWATCH... WRISTWATCH: NO. 3047, POCKET WATCH: NO. 26, CIRCA 1990