1970s Vintage Seiko KING QUARTZ 4823-8130 Analog Watch, Rich Navy Blue Dial Face, Suwa Seikosha, Stainless Steel, Good Condition Seiko King Quartz 4823-8130— A Key Reference in Japan’s High-Grade Quartz Era For collectors of vintage Seiko, the 4823-8130 represents one of the most refined executions of late-1970s high-accuracy quartz engineering. Powered by the Caliber 4823, this model delivers the original ±10 seconds/month performance that helped define the prestige quartz segment created by 諏訪精工舎Suwa Seikosha. Its clean case geometry, crisp dial layout, and integrated day-date display reflect the design language of Seiko’s premium quartz lines—sitting just below Grand Quartz and alongside early Twin Quartz developments. Many surviving examples show excellent long-term reliability, making this reference a strong choice for enthusiasts seeking a historically significant, well-built vintage quartz piece. A true collector’s watch: technically advanced, beautifully finished, and emblematic of Seiko’s pursuit of precision during the golden age of Japanese quartz innovation, a masterpiece that combines precision, design, and presence, symbolizing the technological prowess of the time. It is known as a group of models that aimed to reach the pinnacle of Japanese quartz watches. King Quartz History: Background: In 1969, Seiko released the world's first commercially available quartz wristwatch, the Astron, causing a "quartz shock" in the watch industry. Subsequently, King Quartz was introduced as a line offering even greater precision and luxury. As the development in the 1970s Seiko introduced a luxury line following the mechanical King Seiko.At the time, Seiko offered three pillars: Grand Seiko (high-end), King Seiko (high-end mechanical), and King Quartz (high-end quartz), utilizing quartz technology, it achieved incredible accuracy of within a few seconds per day. But discontinuation of production in the 1980s, the King Quartz series disappeared with the introduction of more affordable quartz movements and new series. However, it remains highly sought after in the antique market and is a symbol of Seiko's technological innovation. The King Quartz series is an iconic example of Seiko's refinement of quartz technology into luxury timepieces. It debuted in the 1970s, following the trend of innovation that followed the Astron in 1969. Combining high precision, luxury, and presence, it remains highly valued in the antique market. In other words, the King Quartz series embodies the "golden age of domestic quartz" and is essential for understanding Seiko's technological prowess and design philosophy. The “4823” series in particular boasted a monthly accuracy of ±10seconds and is popular among collectors for its 諏訪精工舎Suwa Seikosha manufacturing. This model features a classic gold-colored design, exuding the dignity and elegant characteristic of Seiko at the time. This is a watch that embodies the charm of vintage timepieces. The King Quartz was not simply a high-precision timepiece; it may have been a "quiet revolution" that shaped Seiko's future. It features a characteristically linear and refined case design, and the dial is simple yet elegant. This model, with its gold metal bezel finish and lug shape subtly different from other models, is known among collectors as a "hidden gem." The historical background of Seiko's caliber 4823 is that it was a high-precision quartz movement introduced around 1979, particularly in the "King Quartz" series. In the late 1970s, Seiko focused on improving the precision of quartz technology, starting with the world's first quartz wristwatch, the "Astron"(1969). The "King Quartz" series was positioned as a luxury line second only to Grand Seiko and was developed with the aim of combining practicality and precision. Detail features: ■Brand Design: King Quartz a simple and elegant impression and design, good for both formal and business occasions. ■Model No4823-8130 ■Product Number：793527 Manufactured September 1977 Seiko serial numbers are six digits long, with the first two digits indicating the year and month of manufacture. The first number（7）indicates the seventh year of the 1970s, meaning the watch was manufactured in 1977. The next letter （9） is the month code. For Seiko, 1-9 represents January through September, O = October, N = November, and D = December. → "N" is November. Therefore, this watch was manufactured in September 1977. ■Movement Features：Caliber 4823 boasted exceptional accuracy of ±10seconds per month a feat unmatched at the time and led to the development of even higher-end quartz models such as the Grand Quartz and Credor. This precision and reliability laid the foundation for Seiko to become a leader in the global quartz market. The King Quartz case design was characterized by its linear, edgy form. • movement Type: Caliber 9923Quartz (Battery-Powered) • Manufactured:1975-Early 1980s • Accuracy: ±10 seconds/month • Display: Analog (Hour, Minute, Second, Date, Day of the Week) • Hacking Function: Yes （Secondhand Stop） • Frequency:32,768Hz （Standard Quartz） • Jewels:5 • Size: Diameter 25.6mm / Thickness 4.8mm • Manufacturer: Suwa Seikosha （now Seiko Epson） • Battery Model Number:SR43SW/ 301 （Silver oxide） New battery was replaced September 15th,2025 ■Materials: • Case: Stainless Steel • Case Back: Stainless steel • Dial: Navy blue mesh face with pencil-shaped hands and bar indexes combined for both legibility and elegance. three hands display • Size:36mmexcluding crown X 41mm including case lug Thickness: 11mm • Water Resistant: classified as water resistance for everyday use • Total Weight:50.3gms • Case Back: S Steel • Band: brand new leather band with maximum 22cm length and 6cm shorter-adjustable in 8 holes • Crystal: Sapphire Crystal ■Condition: There are very few scratches on the case, case back, and band due to use and the sapphire crystal has no scratches visible to the naked eyes. The watch is in excellent condition overall. Seiko logo on the dial face is eliminated. The battery was replaced in mid-September of this year, and it was functioning normally at the time of listing, so it should continue to function without any issues. Please be sure you are satisfied with the condition before bidding, so please check the photos and product description and ask any questions you may have (please note, however, that we may not be able to answer questions close to the end of the auction)