Scott Gosling Facebook ad: “February 1982 Seiko 7548-7000 Vintage Quartz Diver…”

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A solid condition 7548-7000 that features the bulletproof Seiko 7548A quartz movement. This is the increasingly difficult-to-find vintage watch in this condition. The watch features the classic 7000-series case design and a clean, purposeful aesthetic that has made the 7548 one of Seiko’s most respected vintage quartz tool-watch platforms. The 7548 movement represents an important period in Seiko’s history, combining the accuracy and reliability of quartz technology with a robust, serviceable construction. Unlike many later quartz movements, the 7548 was designed as a high-quality, durable calibre and is well regarded by collectors for its engineering, longevity, and dependable performance. The watch shows honest, age-appropriate wear (please refer to the photos) but remains in outstanding condition. It has benefited from a light case polish, a complete movement service and several recent updates, including a new crystal, fresh battery, and a new Seiko strap that perfectly compliments this serviced watch. The case back has been lightly polished to maintain clarity while preserving the original engravings and medallion detail. Some minor wear marks remain, consistent with age. The watch has new case gaskets fitted; however, due to its vintage nature, water resistance cannot be guaranteed. It should therefore be treated as a vintage watch and not worn swimming or used for water activities. This Seiko represents an important chapter in Seiko’s quartz watch history. In excellent and largely original condition, with the exception of the replacement strap and service components, it is a superb example that will appeal to both serious Seiko collectors and enthusiasts looking for a robust and historically significant vintage quartz watch. THE PRICE I list fully restored watches that have undergone careful mechanical and cosmetic preparation. There are many hours of my time invested in returning each watch to this condition through movement disassembly and servicing, case preparation, cleaning, inspection, regulation, and detailed restoration work. The price I ask is reasonable for the amount of work completed and the condition in which the watch is presented. It runs accurately and presents exceptionally well for its age. If you feel inclined to send a lowball offer, please don’t—I’ll ignore it. Please also note that I am not currently taking on servicing work for other watches. My sole focus is the restoration and preservation of vintage Seiko watches. SPECIFICS OF THIS WATCH Calibre No. – 7548A Quartz movement 5 jewels Battery powered Central seconds Day and date display Quickset day and date function Approximately 27.0 mm in diameter Approximately 4.1 mm thick Designed and manufactured by Seiko Highly regarded for its robust and serviceable construction The day and date are adjusted using the crown. Please operate the calendar functions gently and avoid changing the day or date during the calendar-change period around midnight. CASE Case No. – 7548-7000 Serial No. – 220456 Dial Ref. – 7548-701L T Year of Manufacture - February, 1982 Place of Manufacture – Japan Factory of Origin - Suwa Crystal – New replacement crystal with chamfer Case Code - Japan-J watch (Japanese JDM Model, more desireable than the Japan-A export model) Crown - Screw down - has been fully rebuilt with new crown gasket Case Size – Approximately 42 mm Lug Width – 22 mm Band – New original Seiko DAL1BP replacement strap Bezel - Bidirectional rotating bezel (new gaskets) Bezel Insert - Replacement Seiko OEM Bezel Note that while the watch has new seals, it has not been pressure tested, so can't be verified for water proofing. CONDITION Case – Carefully hand polished Movement – Completely serviced and inspected Battery – New Dial - Unmarked with beautiful lume Hands - Show signs of age with light patina Quickset Day – Excellent operation Quickset Date – Excellent operation Time Setting – Crown-operated Day and Date Setting – Adjusted using the crown SEIKO 7548A MOVEMENT HISTORY The Seiko 7548A is one of the most highly regarded vintage quartz movements produced by Seiko. Introduced during the late 1970s, the 7548 family was developed as a robust, high-quality quartz platform suitable for demanding everyday and professional use. The 7548 is particularly significant because it combined the accuracy and convenience of quartz technology with a durable, serviceable movement architecture. At a time when many quartz watches were becoming increasingly disposable, Seiko engineered the 7548 as a long-lasting movement that could be maintained and repaired. The movement features a traditional gear train driven by a quartz-regulated electronic system and a stepper motor. Its construction is notably more substantial than many later quartz calibres, with serviceable components and a design intended to provide dependable performance over many years. The 7548 was used across a range of Seiko watches, including the highly respected 7548 professional diver series. This association helped establish the movement’s reputation for durability and reliability. The same fundamental movement architecture was capable of supporting watches designed for demanding environments while maintaining the accuracy expected from Seiko quartz technology. The calibre is also notable for its day and date display and practical crown-operated quickset functions. Its combination of accuracy, robust engineering, serviceability, and historical importance has made the 7548 increasingly desirable among vintage Seiko collectors. Today, the 7548 is widely regarded as one of Seiko’s best vintage quartz movements. Well-maintained examples continue to provide excellent performance decades after their original manufacture, demonstrating the quality of Seiko’s engineering during the early quartz era. SEIKO QUARTZ HISTORY Seiko played a defining role in the development of modern quartz watches. In December 1969, Seiko introduced the Astron, the world’s first commercially available quartz wristwatch. The Astron marked the beginning of a major transformation in the watch industry and demonstrated that electronic timekeeping could provide levels of accuracy previously unavailable in a wristwatch. Throughout the 1970s, Seiko continued to develop increasingly accurate, reliable, and affordable quartz movements. The company produced a wide range of calibres, from elegant dress-watch movements to robust movements designed for sports and professional applications. The 7548 movement family emerged during this period as one of Seiko’s higher-quality quartz platforms. It demonstrated that quartz technology could be incorporated into a durable, serviceable, and long-lasting watch rather than being treated as a disposable electronic product. The success and longevity of the 7548 family remain an important part of Seiko’s quartz legacy. Its reputation for reliability, practical design, and strong engineering continues to make it highly respected among collectors and vintage watch enthusiasts. SERVICING & MECHANICAL PREPARATION Many buyers like to know exactly what “serviced” means. Each watch undergoes a detailed mechanical strip-down, with the movement dismantled into its individual serviceable components. I include a photograph of the movement prior to cleaning so you can see the process for yourself. The movement components are carefully inspected, hand cleaned, and then put through a machine wash to remove old oils, residue, and contamination that can build up over decades. The movement is then carefully rebuilt, with all relevant components inspected and lubricated to the correct specifications. The electronic components, coil, stepper motor, gear train, and calendar mechanism are checked for correct operation. A new battery is fitted, and the watch is tested to ensure dependable operation and accurate timekeeping. The movement is then carefully reassembled, tested, and monitored before the watch is offered for sale. A Note on Vintage Mechanical Watches Owning a vintage mechanical watch is very different from owning a modern quartz timepiece. These watches were built in another era and should be appreciated for their craftsmanship, history, and character rather than absolute precision. Due to age, components can be more delicate than those found in contemporary watches. While perfectly functional, many collectors prefer to wear vintage pieces thoughtfully rather than as everyday, high-impact watches. A vintage watch of this age is something to enjoy, maintain, and preserve. Treated with care, a quality vintage watch can remain a rewarding and potentially appreciating asset for years to come. Buying With Confidence Your satisfaction is important to me. If there are any concerns after purchase, please get in touch and I will work with you to resolve the issue quickly and fairly. Please note that this watch has not been pressure tested, and water resistance cannot be guaranteed. It should be kept away from moisture. About Me: I’m an amateur watchmaker with a deep appreciation for classic Seiko timepieces, particularly the movement families from the 60's and 70's. I specialise in restoring neglected vintage Seikos—bringing tired movements, worn cases, and forgotten dials back to life with care and respect for their original character. My passion lies in preserving these pieces of horological history so they can be worn, appreciated, and collected for generations to come. Pickup is a meetup at the Camp Hill Antique Center at an agreed time, cash only. No PayID Learn more about this listing on Facebook Marketplace: https://facebook.com/marketplace/item/1102604192295027/

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February 1982 Seiko 7548-7000 Vintage Quartz Diver Refurbished & Serviced