Seiko - Presmatic 王律 (Ōritsu) – Royal Rhythm - No reserve price - 5146-7080 - Men - 1970

Now available at auction from Second Vintage This Seiko Presmatic is a remarkable example of Japanese high-precision watchmaking from the start of the 1970s. Representing one of Seiko's high-specification lines, the Presmatic series—often referred to as the "Press-Matic" due to its unique quick-set date mechanism—combined robust construction with high-frequency movements. This specific reference features a stunning 30-jewel Hi-Beat caliber, placing it in the upper echelon of Seiko's vintage catalog, sitting comfortably alongside King Seiko in terms of build quality and technical prowess. The "Waterproof" designation on the caseback further confirms its production during the desirable transition era before case markings changed to "Water Resistant." Brand: Seiko Model: Presmatic Reference Number: 5146-7080 Serial Number: 042668 Movement: Automatic Caliber 5146A Dial: Silver Sunburst Case Size: 37 mm (excluding the crown) Case Material: Stainless Steel Production Year: 1970 Condition: Excellent vintage condition. Timegrapher results show a deviation of -21s to -30s/day, which indicates a functioning movement operating within acceptable vintage parameters. Dial and Hands The silver sunburst dial is preserved in outstanding condition, retaining a bright and crisp finish that catches the light beautifully. It features multi-faceted applied baton indices with black inlays that match the sharp dauphine-style hands, ensuring excellent legibility and a sophisticated monochromatic aesthetic. The applied Seiko logo and the cursive "Presmatic" script are sharp and distinct. A framed day-date window is positioned at 3 o'clock, and the dial is signed with the Suwa Seikosha logo and the "Hi-Beat 30 Jewels" text, indicating the high-grade mechanics within. Case and Crystal The stainless steel case features a distinctive C-shape or cushion design that was popular in the late 1960s and early 1970s, offering a significant wrist presence while maintaining an elegant profile. The case lines remain strong, with the brushed surfaces on the lugs contrasting effectively with the polished sides. The distinctive hexagonal crown is semi-recessed, contributing to the streamlined silhouette. The screw-down caseback clearly displays the "Waterproof" engraving, the reference number, and the serial number. The crystal is clear and presents well, allowing for an unobstructed view of the dial. Movement Powering this timepiece is the impressive Seiko Caliber 5146A, a 30-jewel automatic movement operating at a "Hi-Beat" frequency of 28,800 vibrations per hour. This high frequency was designed to provide greater stability and accuracy. The movement presents cleanly, with the rotor bearing the red specifications text. This high-jewel-count movement serves as a testament to Seiko's over-engineering during this golden era of mechanical watchmaking. Strap The watch is fitted with a black leather strap featuring vintage-style contrast stitching in white and brown. The strap is in good condition and complements the sporty yet dressy nature of the stainless steel case, making it ready for immediate wear. Condition This timepiece is in excellent vintage condition. The dial is virtually flawless, which is a significant highlight for collectors. The case shows honest signs of wear consistent with its age, including minor surface scratches and handling marks, but it retains its original geometry without signs of over-polishing. The movement is running and functional. Dimensions With a case diameter of 37 mm, the watch offers a modern fit that wears slightly larger than its dimensions suggest due to the cushion case shape and integrated lug design. It sits comfortably on the wrist, suitable for both formal and casual occasions. Remarks The Seiko Presmatic 5146-7080 is a collector's favorite due to its unique combination of a high-beat movement, a high jewel count, and the interesting push-crown date quickset mechanism that gave the model its name. It is a watch that offers tremendous value and historical interest, representing the peak of Seiko's mass-production capabilities before the Quartz Crisis fully took hold. History Introduced in the late 1960s, the Presmatic line was designed to offer a premium automatic watch with a user-friendly quick-set date feature. The use of a 28,800 bph Hi-Beat movement in this model demonstrates Seiko's commitment to precision during a time when they were aggressively competing with Swiss chronometers. Produced in April 1970, this specific watch was manufactured at the Suwa factory, the birthplace of many of Seiko's most legendary innovations. / Second Vintage SKU: SEI-SPH-0004