Take a step back to August 1981 with this stunning Seiko 5 6309 720C, a vintage automatic watch that’s as perfect for a sharp suit as it is for a casual day out. Its deep black dial, dotted with diamond-like indexes at 12, 6, and 9 o’clock, catches the eye with a touch of elegance, while the rest of the non-numeral indexes keep things sleek. The day and date, neatly tucked at 3 o’clock, make it practical for daily wear, and the crown at 4 o’clock—a classic Seiko 5 trait—makes setting it a breeze. Housed in a sturdy stainless steel case, 37mm wide and 41mm lug-to-lug without the crown, it sits just right on the wrist. The fully serviced Seiko 6309 caliber inside ticks away reliably, with every function working flawlessly, and it comes with a 1-year warranty for peace of mind. Paired with its original full-length stainless steel bracelet, signed C085, this watch is a collector’s dream, ready to ship worldwide and add a bit of vintage charm to your collection.
Seiko 5 6309 720C
The Seiko 5 6309 720C, likely produced in August 1981, is a distinguished member of Seiko’s iconic 5 series, celebrated for blending affordability with timeless style. Its black dial, featuring sparkling diamond-like indexes at 12, 6, and 9 o’clock, sets it apart with a refined, dressy aesthetic, while the compact 37mm case ensures versatility for casual wear. The day-date function at 3 o’clock and crown at 4 o’clock enhance its practicality, and the original C085-signed stainless steel bracelet adds collectible value. Though less documented than other Seiko 5 models, its fully serviced condition and authentic design make it a gem for vintage watch enthusiasts seeking a piece of Seiko’s storied history.
The Seiko 6309 caliber, powering the Seiko 5 6309 720C, is a reliable 17-jewel automatic movement from the late 1970s to mid-1980s, known for its durability and precision. Operating at 21,600 beats per hour, it ensures smooth timekeeping, with a day-date complication that’s quick to set via the crown. With a 47-hour power reserve and robust design featuring a Diashock system, this caliber was a workhorse for Seiko’s dress and dive watches. Fully serviced in this watch, it delivers flawless performance, making it a favorite among collectors for its longevity and ease of maintenance.