Presented for auction by Second Vintage This exceptional Seikomatic-P stands as a brilliant testament to Seiko's late-1960s design language and mechanical ambition. Produced by the legendary Daini Seikosha division, this timepiece combines a highly jeweled automatic caliber with a distinctive cushion case architecture. The subtle integration of refined dial furniture and unique technical elements, such as the signature hexagonal crown, makes this reference a highly compelling acquisition for the astute collector of vintage Japanese horology. Brand: Seiko Model: Seikomatic-P Reference Number: 5106-7010 Serial Number: 861808 Movement: Automatic Caliber 5106A, 33 Jewels Dial: Silver sunburst dial with applied faceted indices, presenting in exceptionally clean condition with crisp printing and no visible moisture damage. Case Size: 35 mm (excluding the crown) Case Material: Stainless Steel Production Year: 1968 Condition: Excellent vintage condition with a beautifully preserved dial and honest, attractive case lines. Dial and Hands The dial of this Seikomatic-P is a masterclass in mid-century Japanese finishing, featuring a radiant silver sunburst texture that catches the light dynamically. It is adorned with applied, faceted block indices that feature precise black painted central channels, matching the aesthetic of the polished dauphine hands which also carry black central striping. The applied polished "SEIKO" logo sits proudly below the twelve o'clock position, while the Daini Seikosha lightning bolt emblem is sharply printed above the six o'clock marker. A framed day-date aperture is positioned at three o'clock. A close visual inspection reveals the dial is in stunningly clean condition, entirely free from heavy spotting, staining, or print loss, maintaining an incredibly crisp and factory-fresh appearance that is highly desirable in vintage pieces. Case and Crystal The 35 mm stainless steel cushion case exemplifies the robust yet elegant geometry of the era. The case features beautifully defined transitions between the vertically brushed upper surfaces and the brightly polished flanks. A standout feature is the original, recessed hexagonal crown, which remains sharp and easily operable. The watch is fitted with a clear crystal that protects the dial and allows unobstructed viewing of the pristine sunburst finish. The case exhibits honest signs of normal vintage wear, including light, superficial surface scratches across the polished sides and bezel area, but it retains its structural integrity without any signs of aggressive over-polishing. The screw-down caseback is sharply engraved, with the serial number, reference number, and Daini factory logo remaining deeply legible. Movement Powering this timepiece is the Seiko Caliber 5106A, a sophisticated automatic movement boasting 33 jewels. The close-up images of the movement reveal clean bridges, a bright winding rotor proudly stamped with the Seiko branding in red, and an overall tidy mechanical presentation. Running in vintage operational condition. Maintains the authentic mechanical character of the era, with the timegrapher recording a current performance of -40-49s/day. Strap The watch is paired with a handsome, period-correct styled black textured leather strap. It features prominent white contrast stitching along the edges and is secured with a classic stainless steel pin buckle, complementing the monochromatic aesthetic of the dial perfectly. Condition This timepiece is presented in excellent vintage condition. The absolute highlight is the impeccably preserved silver sunburst dial, which remains vibrant and remarkably clean for its age. The stainless steel case shows expected, honest handling marks and light surface wear consistent with a watch from the late 1960s, yet it maintains strong, attractive lines. The movement is visibly clean and operational, making this a thoroughly well-preserved survivor. Dimensions Case Size: 35 mm (excluding the crown) Remarks The Seikomatic-P reference 5106-7010 is a superb example of Daini Seikosha's capability to produce elegant, high-performance daily wearers. The combination of a 33-jewel movement, the striking hexagonal crown, and a dial that has survived the decades in near-flawless condition makes this a truly premium offering. It is a sophisticated vintage dress watch that commands attention on the wrist while offering profound historical value to the dedicated Seiko enthusiast. History During the 1960s, Seiko's internal rivalry between the Suwa and Daini factories pushed both facilities to extraordinary heights of innovation and finishing. The Seikomatic line was conceived to offer premium automatic watches to the domestic market, bridging the gap between standard models and the elite Grand Seiko range. The Seikomatic-P, powered by the high-jewel 5106 caliber from Daini Seikosha, represents the pinnacle of this mid-tier luxury segment. Its introduction brought advanced features like direct day-date setting mechanisms, packaged within forward-thinking case designs that continue to influence modern horology today. Payment and Shipping Payment must be completed within 1–3 days after purchase. Your watch will be professionally and very securely packaged, and shipped with tracking and insurance for your peace of mind. We ship via fast express service, with typical delivery in 1–4 business days (destination dependent). Note that with vintage watches, minor signs of wear, aging, or imperfections may be present and are considered normal for watches of this age. Please review all photos carefully before bidding. We strive to photograph each watch from multiple angles for the most accurate representation. The photos form an important part of the description. If there are any concerns of functionality or defects after delivery, make sure to contact us within 3 days of receiving the watch so we can assist you. As with all vintage watches, water resistance is not guaranteed. If you have any questions, feel free to contact us after the auction ends. / Second Vintage SKU: SEI-SMJ-0016