Patek Philippe Ref. 2508

18K yellow gold wristwatch, circa.1951. Silver dial, blued center seconds. Water-resistant,screw-down case back, stepped bezel, concave lugs, dust protecting cap. Manual wind movement, calibre 27SC, 18 jewels. Case diameter 35 mm,lugs width 18 mm.

Reference 2508 (and its reference sister 2509, identical but with subsidiary seconds) was launched in 1950, and remained in production until the late 1960s. It is the waterproof version of the large calatrava model (such as reference 570), and its case design and construction presents many similarities with the reference 1463 masculine case design, such as the case back construction, the presence of the dust cap, the bezel style and the lugs design.

Reference 2508 is known in two series. The first series, presents square and dagger numerals, the second series presents either luminous baton numerals and outer scale, or non luminous numerals and outer beady divisions.