Vintage Seiko Bell-Matic 4006-6031 – Mechanical Alarm – September 1975 Up for auction is a classic piece of Japanese horological history: the Seiko Bell-Matic. Renowned for its unique mechanical alarm complication, this "Cushion Case" model from the mid-1970s is a standout collector's item that combines vintage charm with functional engineering. The Complication and Movement At the heart of this timepiece is the Seiko Calibre 4006A, a 17-jewel automatic movement. Unlike modern digital alarms, this watch uses an internal hammer and sounding spring to create a distinctive mechanical chime. The alarm is set using the internal rotating bezel, which features a prominent red/orange indicator. Design and Aesthetics • The Dial: A beautiful silver sunburst dial that remains in excellent vintage condition. It features applied silver hour markers and a day-date window at 3 o'clock. • The Case: The robust stainless steel cushion-style case (Ref. 4006-6031) retains its original factory lines and brushed finish. It shows honest signs of age, including minor surface scratches and small "flea bites," which preserve its authentic vintage character. • The Strap: The watch has been paired with a new, high-quality aftermarket "Tricolore" NATO strap in red, white, and blue, giving the piece a modern, sporty edge that perfectly complements the silver dial. Condition and Functionality Based on the serial number (590271), this watch was manufactured in September 1975. It is currently in working condition and running accurately. The mechanical alarm functions as it should, providing that iconic "cricket" sound. Please Note: While the watch is currently performing well, it is a vintage mechanical piece. To ensure long-term reliability and precision, a professional service is recommended for the future. Specifications at a Glance • Brand: Seiko • Model: Bell-Matic • Reference: 4006-6031 • Movement: Automatic 4006A (17 Jewels) • Production Date: September 1975 • Case Material: Stainless Steel • Case Size: Approx. 39mm (excluding crown) • Functions: Hours, Minutes, Seconds, Day, Date, and Mechanical Alarm • Crystal: Acrylic • Strap: Aftermarket NATO (Red/White/Blue) Auction Information This is a fantastic opportunity to own a legendary Seiko complication in a desirable case shape. Please study the high-resolution photos carefully as they form the primary part of the condition description. The watch will be securely packaged and shipped with tracking and insurance. Shipped within 24hrs of payment via UPS