This is a Gents 18K/W Patek Philipe wrist watch. It has a beautiful mesh band with an engraved design running along the outer edge of the band to the clasp. As near as I can figure it dates to approx. 1970-79. It has been completely overhauled and runs great! The over all condition of this watch is top notch. It would make a wonderful addition to anyone who collects or has an appreciation for this time piece.The diameter is 33mm.