A very fine and rare stainless steel manual-winding wristwatch ref.438.
With Patek Philippe Extract from the Archives confirming production of this watch with steel hour markers in 1949 and subsequent sale on August 29th, 1949.
Extract from the Archives
Specialized in vintage Patek Philippe watches “ONbeHALF Co., Ltd.”
Aspa Nihonbashi, 2-1-1 NIhonbashi Hongoku-cho, Chuo-ku, Tokyo,103-0021, Japan Onbehalf co., ltd.
tel. +81-3-3548-9188 fax. +81-3-3548-9189 mobile. +81-80-5681-8016