Seiko - Sportsmatic Calendar 820 - No reserve price - 6619-8090 - Men - 1966

Now available at auction from Second Vintage A classic 1960s Seiko Sportsmatic with a clean sunburst dial. This 1966 example showcases the distinctive recessed crown at the 4 o'clock position and dauphine hands that add distinct character to the wrist. Brand: Seiko Model: Sportsmatic Calendar 820 Reference Number: 6619-8090 Serial Number: 6109303 Movement: Automatic Dial: Silver sunburst with applied gold-tone indices Case Size: 37mm (excluding the crown) Case Material: Gold Plated Production Year: 1966 Condition: Good vintage condition. Timegrapher: -46-50s/day, running in operational condition. Note: The watch is fitted with a replacement caseback (ref. 6619-8090), originally associated with a day-date model, while this example features the date-only 7625 configuration. This period replacement does not affect the watch’s functionality but is mentioned for full transparency. Dial and Hands The silver sunburst dial is exceptionally clean and attractive, preserved in wonderful condition. The applied gold-tone indices are clean, and all printed text remains crisp and intact. The original gold-tone dauphine hands show age-related oxidation and visible spotting on their surfaces, providing a clear contrast to the well-preserved dial beneath. Case and Crystal The gold-plated case presents honest wear consistent with its age, showing visible scratches and handling marks throughout. Plating wear is visible on the lug edges, case flanks, and the integrated gold-tone bezel, which also bears light scratches. The distinctive recessed crown at the 4 o'clock position exhibits some plating wear. The domed acrylic crystal shows light surface scratches and scuffs visible at certain angles. The caseback bears the reference 6619-8090, which corresponds to a day-date model, while the dial indicates the date-only caliber 7625, documenting a mismatch between the dial and caseback components. Movement The mechanical movement is engraved with the Seiko signature and appears generally clean, with light scratches visible on the rotor. The timegrapher records a rate of -46-50s/day. Running in operational condition. Maintains the authentic mechanical character of the watch. Strap The watch is fitted with a brown leather strap featuring contrast stitching. The strap appears to be in lightly used or new condition, providing a comfortable pairing for the gold-plated case. Condition Good vintage condition. The silver sunburst dial is exceptionally well-preserved, while the original dauphine hands display visible oxidation and spotting. The gold-plated case and bezel show honest age-related wear, including scratches, handling marks, and visible plating loss on the lug edges and flanks. The recessed crown also shows plating wear, and the domed acrylic crystal has light surface scuffs. As noted, the caseback is a mismatch for the dial's caliber code. Timegrapher results show -46-50s/day, running in operational condition. Dimensions The case measures 37mm in diameter, excluding the crown. Remarks This Seiko Sportsmatic Calendar 820 is notable for its beautifully preserved silver sunburst dial and classic 1960s aesthetics. The combination of the recessed crown and dauphine hands makes it a charming and highly wearable vintage timepiece. History Introduced in the 1960s, the Seiko Sportsmatic line was designed to offer reliable, everyday automatic timepieces to a broad audience. The series became known for its robust mechanical construction and clean, legible dials. A signature design element of many Sportsmatic models was the recessed crown at the 4 o'clock position, intended to emphasize the automatic winding nature of the movement by making manual winding less prominent. These watches remain appreciated by enthusiasts today for their classic mid-century proportions and enduring Japanese design. Payment and Shipping Payment must be completed within 1–3 days after purchase. Your watch will be professionally and securely packaged, then shipped with tracking and insurance for your peace of mind. We use fast express shipping, with typical delivery within 1–4 business days, depending on the destination. Please note that vintage watches may show minor signs of wear, aging, or imperfections, which are considered normal for watches of this age. We kindly ask you to review all photos carefully before bidding. We photograph each watch from multiple angles to provide the most accurate representation possible, and the photos form an important part of the description. The timegrapher assessment if provided is seen as an indication of the movement’s condition under fully wound testing conditions. As with all vintage watches, results may vary in daily use. If you have any concerns regarding functionality or defects after delivery, please contact us within 3 days of receiving the watch so we can assist you. As with all used watches, water resistance is not guaranteed. If you have any questions, feel free to contact us after the auction ends. / Second Vintage SKU: SEITS588K0000