Produced during Japan’s period of rapid economic growth, this Seiko Business-A was designed as a dependable yet refined mechanical watch for the businessmen who supported the nation’s expanding economy in the late 1960s. By this time, Seiko had already established its highest-end lines such as Grand Seiko and King Seiko. Alongside these, the company also developed robust, practical watches for everyday professional use. The Business-A occupies an important position within this structure, offering advanced mechanical specifications and elegant design for serious daily wear. At the heart of this watch is a 27-jewel mechanical movement, a notably high jewel count for a business-oriented model of the era. This generous use of jewels reflects Seiko’s emphasis on durability, reduced friction, and long-term reliability, demonstrating that practicality did not come at the expense of technical refinement. The silver sunburst dial is complemented by applied gold-tone hour markers and hands, creating a calm yet dignified presence. The day-date display features English day indication only, reflecting the international outlook of Japanese business culture at the time. The date can be quick-set by pulling the crown to the first position, while the day is adjusted by rotating the hands, a characteristic operating method of Seiko’s mechanical calendars from this period. The case shows honest signs of age consistent with a watch manufactured in November 1967, as confirmed by the original Seiko serial number. The dial exhibits natural aging, adding depth and character rather than detracting from its overall elegance. A new leather strap has been fitted, making the watch ready to wear while preserving its classic appearance. This timepiece is more than a vintage watch; it represents Seiko’s technical confidence and design philosophy during one of the most significant eras in modern Japanese history, where precision, reliability, and understated beauty were essential tools of everyday professional life. Running at the time of listing. As a vintage watch, stable operation, accuracy, and water resistance are not guaranteed. The watch will be carefully packed and shipped with tracking for safe delivery.