Hello, I have two Serica 5303's for sale. I am a big fan of the brand and of this model in particular. These are the 1st gen model with the soprod movement which I personally love. Both work great and exhibit no issues. While they lack a COSC certification in my experience they perform up to those standards. Great size too, looks great on the wrist. Looking to sell both for $850 each. CONUS only, no interest in trades or lowball offers. I can do Zelle, cashapp or paypal (add 3% for G&S fees) and will ship with USPS. Thank you for taking the time to look at my listing!