Patek Philippe Rare Keyless Lever Deck Watch With Power Reserve, Extra Quality Movement, circa 1911. ...
Case: No. 273599, four body bassine, .900 silver, plain back, 61 mm
Dial: silver with radial black enamel Roman numerals, 36 hour power indicator sector and subsidiary seconds, black outer minute track, double swell blue spade hands
Movement: No. 170288, numbered twice, marked "Extra", 20 jewels, nickel bridge, diamond endstone on the balance, Guillaume balance with counter poised pallet, gold timing screws, straight line damaskeening, wolf's tooth winding, swan's neck micrometric regulator
Signed: triple signed Patek Philippe
Note: Accompanied by the Extract from the Archives which states the date of manufacture as 1911 and that the watch obtained the Geneve Observatory rating certificate on April 22nd, 1913. It is unusual to find a Patek Philippe movement with a diamond endstone jewel such as the one on this "Extra" marked high grade example.
Condition Report*:Type: Patek Philippe Rare Keyless Lever Deck Watch With Power Reserve, Extra Quality Movement
Dial: silver, black enameled Roman numerals
Hands; blued steel spades
Metal: .900 silver
Case No: 273599
Case Info: open face, bassine, plain back
Case Width: 61 mm
Watch Movement: marked "Extra", numbered twice, No. 170288, 20 jewels, damaskeened nickel bridge, diamond endstone, Guillaume balance, wolf's tooth winding, micrometric regulator
Condition: overall very good condition, some inner case opening marks but otherwise case is very good, dial original and good, movement good and running
*Heritage Auctions strongly encourages in-person inspection of items by the bidder. Statements by Heritage regarding the condition of objects are for guidance only and should not be relied upon as statements of fact, and do not constitute a representation, warranty, or assumption of liability by Heritage. All lots offered are sold "AS IS".
Service and Handling Description: Miscellaneous Collectibles, Small (view shipping information)