My shop only sells genuine products, so please feel free to purchase. We also have a large inventory of excellent vintage and antique watches → #nekoneko Please read the profile before purchasing. ● Product Description This is a 1966 "Sportsmatic," which can be said to be the origin of SEIKO's world-renowned "Five" series. This rare early model has the "dolphin mark" engraved on the back cover, which is proof of its waterproof performance. The crown embedded at the 4 o'clock position does not interfere with the case lines, giving it a very smart and sophisticated impression. The dial is silver with a sunray finish that changes its appearance depending on the angle of light. The three-dimensional indexes and dolphin hands give it the power and elegance typical of Japanese-made watches of the time. The watch has been overhauled and the windshield has been replaced with a new one. Both the exterior and interior are in excellent condition. ● Detailed Information • Brand: SEIKO • Model Name: Sportsmatic 5 • Model Number: 6619-8190 • Year of Manufacture: 1966 • Movement: Cal.6619 (21 jewels / Automatic / 18,000 vibrations) • Case Material: Stainless Steel • Dial Color: Silver Sunray • Functions: Day-date display (date quick-set by pressing the crown at 3 o'clock) ● Size • Case Width: Approximately 36mm (excluding crown) • Lug Width: Approximately 18mm • Wrist Size: Approximately 17cm (Please allow for some margin of error) ● Condition of the Product • Overhauled in January 2026: Disassembly, cleaning, oiling, and adjustment of the internal parts have been completed. • Accuracy: The timegrapher measurement shows a daily rate of +2 seconds to +5 seconds, which is excellent accuracy. (There may be some variation depending on the actual usage environment). • Exterior: Although there are minor scratches on the case and windshield due to the vintage nature of the item, the edges are sharp and the original texture is well preserved. • The windshield has been replaced with a new one and is very clean. • Belt: A classic metal band from the time is attached. ● There may be scratches and stains that cannot be fully captured in the photos. Also, the evaluation of the condition of the item is my subjective opinion, so please refer to the description and photos and consider accordingly. ● Shipping will be done as quickly as possible and with careful packaging.