Sotheby's Imp. Wristwatches Watches Patek Philippe Auction Catalog April 2010
PATEK PHILIPPE: A FINE AND RARE 18K YELLOW GOLD AUTOMATIC PERPETUAL CALENDAR WRISTWATCH WITH LEAP-YEAR, REF 3450. PATEK PHILIPPE: A PLATINUM ANNUAL CALENDAR CENTER SECONDS WRISTWATCH WITH MOON-PHASES AND POWER RESERVE, REF 5450P.