1980s Vintage Seiko Integrated Diamond Marker Tank Watch

• Brand & Origin: Seiko Quartz, Made in Japan (Dial code visible: JAPAN 1C00-0504 R).

• Era: Circa 1980s.

• Design & Style: Architectural dress watch featuring a geometric octagonal-in-rectangular step bezel and a seamless, wide-segment integrated brick bracelet.

• Dial: Monochromatic textured champagne gold dial accented with a genuine single diamond marker at 12 o'clock and slender dark dauphine hands.

• Movement: Japanese Quartz movement (Caliber 1C00) for reliable and precise timekeeping.

• Case & Bracelet: Fully polished and brushed gold-tone finish with a continuous, heavy-link integrated strap design.

• Rarity: Rare — the structural architectural bezel combined with a single diamond marker and solid integrated brick bracelet makes this a highly collectible late-century reference.

Note: Please note that the watches are all in working condition — preserved and revived. Please expect some minor defects based on usage and time.