A Fine Gold Wristwatch, Patek Philippe & Co., Genève, Movement No. 742591, Case No. 206516, Ref. 448, 1954

18k, Cal. 10'''-200, nickel lever movement, 18 jewels, monometallic compensation balance, micrometer regulator, adjusted to heat, cold, isochronism and 5 positions, stamped twice with the Seal of Geneva, silvered matte dial, applied gold baton markers, engine-turned subsidiary seconds, circular case with flat bezel, downturned lugs, snap back, case, dial and movement signed. 

Accompanied by a Patek Philippe Extract from the Archives confirming production in 1954 and its subsequent sale on October 19th, 1955.

Patek Philippe launched this model, Ref. 448, in 1935. It is one of the smallest calatrava models made for men.