Up for sale from my personal collection (I am not a dealer) is a Serica 5303 Diver, gen. 1. While not COSC certified, the watch is in TZ excellent condition overall and is performing well within COSC specifications with excellent (-1 sec/day!) rate results, amplitude and beat error. (See photos of Timegrapher results.) Great wrist presence without being huge. 300m/1000 ft. water resistance. Includes full kit: presentation box, owner’s manual/international warranty, hang tag, stainless steel Serica Milanese strap and unused Serica perforated rubber strap.

Price is $875 shipped by USPS Priority Mail in CONUS with insurance and payment via Zelle or equivalent. Add 3% for PP G&S. No sales outside of CONUS and no trades or lowball offers, please. Thanks for looking. Alex