This Seiko Sardonyx Stone Dial watch features a rare sardonyx dial and a unique Silver Hard Alloy Cobalt case. It is from 1980 and has a running movement.

• Condition: Excellent
• Case material: Silver Hard Alloy Cobalt (SHAC)
• Case hardness: 700 Vickers
• Movement status: running without issue

A robust, Belfast-built field watch inspired by Shackleton's legendary endurance expeditions. It features a textured white dial and reliable Swiss movement.

• Condition: Excellent overall condition, very lightly worn
• Case size: 39mm diameter
• Lug width: 20mm
• Thickness: 11mm

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

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

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

• Tungsten case material: true

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

a luxury watch from the 1980s, featuring a unique unscratchable case made of tungsten, part of the Dolce collection

• Condition: Unscratchable Case
• Year of manufacture: 1981

• Case material: SHAC