Seiko Seikomatic-P 輝尊 – Kison 5106-8020 (1967)

Offered in this auction by Second Vintage Seiko’s mid-century expertise and refined engineering are beautifully showcased in this Seiko Matic-P, reference 5106-8020. Outstanding for its premium 5106 automatic movement with quickset day-date, this 39mm vintage piece stands out thanks to its uncommonly crisp silver sunburst dial and well-preserved case. Fully original, with the correct domed crystal and multi-link bracelet, this watch offers both collectibility and everyday appeal. Its subtle patina, strong case lines, and robust movement capture the spirit of iconic 1960s Seiko craftsmanship. Brand: Seiko Model: Seikomatic-P Reference Number: 5106-8020 Serial Number: 7700371 Movement: Seiko 5106 automatic, quickset day-date Dial: Silver sunburst with baton indices and original hands Case Size: 39mm (excluding the crown) Case Material: Stainless steel Production Year: 1967 Condition: Excellent vintage condition, with a clean dial showing light, even patina; sharp case lines; crisp engravings; and running at -32 to -44 seconds per day on the timegrapher, indicating healthy movement and reliable vintage performance. Dial and Hands The original silver sunburst dial shines with classic Seiko refinement, its applied baton indices and original hands displaying subtle, even aging. The text and markers are sharp and legible throughout. The framed day-date window is in perfect working order, complementing the overall vintage charm. Case and Crystal The 39mm stainless steel case presents sharp lugs, defined surfaces, and well-maintained brushed finishing. Minimal polishing is evident, with original lines and proportions intact. The domed acrylic crystal is in excellent condition with only minor superficial marks, preserving clarity. Movement Powered by the esteemed Seiko 5106 automatic movement, this watch features a quickset day-date complication and is renowned for its durability. The timegrapher reading of -32 to -44 seconds per day reflects a healthy movement, promising dependable vintage performance. Strap Fitted with what appears to be the original multi-link stainless steel bracelet, this piece accommodates wrists up to 18.5cm. The bracelet retains its integrity, showing minor surface marks consistent with gentle, careful wear. Condition This watch is in excellent vintage condition throughout. The dial exhibits attractive, even patina; the stainless steel case remains sharp, with no significant dents or loss of definition; and the crystal is clear with only faint, unobtrusive marks. The bracelet is in similarly impressive condition, with strong links and a reliable clasp. The watch runs within vintage tolerances, in line with the included timegrapher data. Dimensions Case size: 39mm (excluding the crown) Wrist size: 18.5cm (with current bracelet) Remarks A rare opportunity to acquire a Seiko Matic-P 5106-8020 in exceptional original condition. With its sharp case, eye-catching dial, and outstanding movement performance, this is a coveted reference for serious Seiko collectors and vintage watch enthusiasts alike. History The Seiko Matic-P line marked a significant advance in the brand’s automatic offerings during the 1960s, featuring refined movements and distinctive styling. The 5106 caliber was admired for its mechanical innovation, including a quickset calendar and robust build quality. Today, the Seiko Matic-P is prized for its reliability, timeless design, and pivotal role in Seiko’s watchmaking evolution. / Second Vintage SKU: SEIRLKMX30000