Patek Philippe. A rare gold twenty dollar coin watch, Ref. 803, 1974.
Movement: cal. 175, ultra-thin, manual winding, no. 1179571.
Dial: gilt, Arabic numerals.
Case: 18ct gold, snap-on back, concealed within a American 1904 twenty dollar gold coin, no. 2743288, hidden push-button to the milled band.
Signed: case, dial and movement.
Dimensions: diameter 34mm.
Accessories: pouch and extract from the archives.
£14,000-£18,000

Coin watches were first produced in the 1920’s. These rare ultra thin timepieces are made of two actual coins to construct the outer case.
Prestigious brands such as, Cartier, Patek Philippe, Piaget, Corum and Vacheron Constantin have produced examples of these interesting, collectable, novelty timepieces over the years.
The Extract from the Archives confirms date of manufacture of 1974 and date of sale of 16 October 1979.