Thank you for viewing. This is a Ref. 6426, a non-date type of the Ref. 6694, which is still widely available in the market, and features a large crown. The Ref. 6426 is considered an entry-level vintage Rolex model, alongside the Oysterdate Ref. 6694 and Air-King Ref. 5500. It's a hand-wound, non-date model, so it's very simple, but if you use it for a long time, you don't have the hassle of setting the date. You can simply wind the crown and set the time, then quickly put it on your wrist and go out, making it very convenient. Also, because it's a simple three-hand, non-date model, the movement is less likely to break, and the ease of maintenance is a great advantage for long-term use. ■ Model Ref. 6426 ■ Serial Number 2613578 ■ Year of Manufacture 1968 ■ Dial Black Mirror Dial ■ Indexes & Hands Silver ■ Crystal Domed Plastic Crystal ■ Case Size 34mm (excluding the crown) ■ Bracelet Oyster Bracelet, 12 links 7835/19 FF257 Clasp Code 2/71 (made in 1971) ■ Daily Rate (Measured flat for 48 hours) Day 1 +26 seconds / Day 2 +14 seconds ( +40 seconds in 2 days) ■ Power Reserve Approximately 54 hours from a fully wound state ■ Accessories None The selling point is, above all, the dial. The rare and popular black mirror dial with silver print lettering has a cool and stylish atmosphere. The luminous material is intact, with no missing parts, and all tritium remains, including the hands. The bar indexes are convex facets, and the 3, 6, and 9 are doubled for accent. The Rolex crown logo is a flat type, and combined with the smooth bezel, it has a sporty taste. Photos 19 and 20 are reference images. Similar models are also sold in several famous antique shops. There is no proof of the movement's condition, but I was told by the previous owner that it was overhauled in 2022. The crown winds smoothly and can be screwed in firmly to the base. As it is a vintage item, we appreciate your understanding of vintage/antique items.