[WTS] Seiko Sardonyx Blue Stone Dial 6020-5260 with Silver Hard Alloy Cobalt Case (SHAC)

Seiko Sardonyx Blue Stone Dial 6020-5260 with Silver Hard Alloy Cobalt Case (SHAC)

Seiko - 6020-5260 · $750
This is a 1979 Seiko Sardonyx Blue Stone Dial watch featuring a unique blue sardonyx dial and Silver Hard Alloy Cobalt (SHAC) case. The case has a Vickers hardness scale of 700, making it more durable than 316L steel.

  • Condition: Excellent
  • Case Material: Silver Hard Alloy Cobalt (SHAC)
  • Vickers Hardness Scale: 700
  • Movement Status: Running without issue
Posted at
Apr 17, 2026, 2:46 AM
Active
[WTS] Seiko Sardonyx Stone Dial 6020-5260 with Silver Hard Alloy Cobalt Case (SHAC) and Brand New Lizard Grain Strap from HandDn

Seiko Sardonyx Stone Dial 6020-5260 with Silver Hard Alloy Cobalt Case (SHAC) and Brand New Lizard Grain Strap from HandDn

Additional details about the watch are provided, but a description of the watch itself is not given.

  • Case material: Silver Hard Alloy Cobalt (SHAC)
  • Strap: Brand New Lizard Grain Strap
Posted at
Apr 15, 2026, 3:45 AM
Active
[WTS] Seiko Dolce 6020-5260 Stunning Stone Dial“Unscratchable”SHAC Case with Original Box

Seiko Dolce 6020-5260 Stunning Stone Dial“Unscratchable”SHAC Case with Original Box

This Seiko Dolce watch features a stunning stone dial and a SHAC case that is known for being unscratchable.

  • Case material: SHAC (Stainless Steel and Hardened Aluminum Composite)
  • Box included: yes
Posted at
Feb 27, 2026, 5:10 PM
Expired