A Rare two-tone gold square driver's wristwatch, Patek Philippe & Co., Genève, Movement No.851726, Case No.623693, Ref. 576

18k, damascened circular nickel lever movement stamped twice with the seal of Geneva, 18 jewels, mono-metallic compensation balance, adjusted to heat, cold, isochronism and 5 positions, silvered dial, applied baton numerals, sloped pink gold square case with the bezel partially outlined in white gold, case, dial and movement signed.

Accompanied by an Extract from the Patek Philippe Archives confirming productin of this watch in 1941 and its subsequent sale on September 17th the same year.

Patek Philippe commenced production of the reference 576 in 1938.

For a similar example see Huber & Banbery, Patek Philippe Wristwatches, Volume 2, Second Edition, p.165, pl.250.