Introduction This auction features a vintage Seiko 5 5126-8040, a classic automatic timepiece that represents the enduring reliability and functional elegance of Seiko’s early mechanical "5" series. With its clean lines and high-jewel movement, this model is a quintessential example of late-1960s Japanese watchmaking. Historical / Era context Produced in May 1968, this watch is powered by the Daini Seikosha-developed caliber 5126 movement. Featuring 23 jewels, this automatic caliber was known for its robustness and was often used in Seiko's popular "Sports" and "70" series of the era. This particular model captures the transition of Seiko’s design language toward the bold, practical aesthetics that would define the brand for decades. Condition The watch is running properly. Case: The stainless steel case shows surface scratches and signs of wear consistent with its vintage age, but it retains its original shape and sharp lug edges. Dial: The silver sunray dial is in very good condition, catching the light elegantly with minimal signs of aging. The applied markers and handset remain crisp and legible. Crystal: The crystal has visible surface scratches and signs of use consistent with historical wear, as captured in the detailed photographs. Band: The original integrated Seiko stainless steel bracelet is present, showing some typical vintage stretch and surface marks, but remains structurally sound and comfortable for wear. Specifications Brand: SEIKO Model: Seiko 5 Reference: 5126-8040 Movement: Japanese Automatic (Cal. 5126, 23 Jewels) Case material: Stainless Steel Case diameter: 37 mm (excluding crown) Dial color: Silver Band: Original stainless steel bracelet Wrist size: Approximately 16.5 cm Closing note This Seiko 5126-8040 is a fantastic piece for collectors who appreciate the mechanical history of the Daini Seikosha era. Its timeless silver dial and original bracelet make it a versatile addition to any vintage collection. Please examine the high-resolution photographs carefully to confirm the condition of this 1960s mechanical classic.