[WTS] Seiko Sardonyx Blue Stone Dial 6020-5280 with Silver Hard Alloy Cobalt Case (SHAC)

Seiko Sardonyx Blue Stone Dial 6020-5280 with Silver Hard Alloy Cobalt Case (SHAC)

Seiko - 6020-5280 · $750
This 1979 Seiko Sardonyx Blue Stone Dial watch features a rare blue sardonyx dial and unique Silver Hard Alloy Cobalt case, which measures 700 on the Vickers hardness scale.

  • Condition: Excellent, with hairlines on the case from wear
  • Material: Silver Hard Alloy Cobalt (SHAC)
  • Hardness: 700 Vickers hardness scale
  • Year: 1979
Posted at
Apr 18, 2026, 5:33 PM
Active
[WTS] Seiko Chariot 6020-5280 Rare Black stone dial, 31.4mm SHAC Case 6.4mm Thick @ 300

Seiko Chariot 6020-5280 Rare Black stone dial, 31.4mm SHAC Case 6.4mm Thick @ 300

  • Diameter: 31.4mm
  • Thickness: 6.4mm
Posted at
Oct 20, 2025, 9:42 PM
Sold