I love the 303. It has virtually the same case as the 103 Pilot but a steel bezel and stick markers. However, mine had tritium lume so it doesn’t glow. A few weeks ago someone listed theirs with replacement dial and hands and I decided I’d like to be able to tell the time at night. Mine has no service history and I haven’t timed but it winds well, has great screw in threading and I’ve noticed no deviation and wore regularly. (Once a month or so.) From Sinn: Case diameter: 41 mm. Band lug width: 20 mm. Case thickness: 15,5 mm. (Yikes, right? But it never felt overly thick to me and I have a 6.75” wrist.) Condition is.. used. Scratches on the case and bracelet. But I think the price is right for a neo vintage Sinn and 7750 chronograph. No box, no papers. But does have links enough for probably 7.5 wrist. I’m willing to sell mine for $1050 on the bracelet or 900 off. Shipped in the USA. These hollow end link bracelets fit me better than the modern ones so I wouldn’t mind keeping for my two vintage 103s. I don’t have PayPal but do have Venmo, Wise or Zelle.
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