Omega Seamaster Caseback 166.0136 366.0826 Seahorse Steel 30.9mm Vintage Part

About this item

An original Omega Seamaster caseback (back only, spare part) from a vintage Seamaster with a gold-plated case. The outside carries the raised Seamaster hippocampus (seahorse) medallion with the Omega symbol. Inside, it is stamped with the Omega Watch Co. triangle, the Omega symbol, "BREVET + 508925", the case reference 166.0136 and the number 366.0826, plus "CARRURE-LUNETTE PLAQUE OR L 80 MICRONS / FOND ACIER INOXYDABLE" (case middle and bezel gold-plated, back in stainless steel).

Brand heritage

Omega introduced the Seamaster in 1948, and the hippocampus seahorse emblem on the caseback became the hallmark of the line. Vintage Seamaster references with 166.xxxx numbers were the automatic models of the 1960s and 1970s.

Why this one is special

• Genuine Omega part, fully signed inside and out
• Crisp, well-defined Seamaster seahorse medallion
• Clearly stamped reference 166.0136, easy to match to your watch
• Ideal replacement for a Seamaster 166.0136 case

Specifications

• Brand: Omega
• Part: caseback (back only)
• Case reference stamped: 166.0136; caseback number: 366.0826
• Other stamps: Omega Watch Co. triangle, Omega symbol, BREVET + 508925, CARRURE-LUNETTE PLAQUE OR L 80 MICRONS, FOND ACIER INOXYDABLE
• Outside: Seamaster seahorse medallion with Omega symbol
• Material: stainless steel
• Diameter: 30.93 mm (measured with caliper)
• Era: vintage, circa 1960s-1970s

Condition

Pre-owned, with visible signs of age and use: scratches and a few small dings on the outer surface, and a gold/bronze-coloured discoloration around the outer rim. The medallion and all inside stamps are clear. Please check all photos carefully as they are part of the description.

What's included

The caseback only. No watch, movement, gasket, box or papers.

Shipping & Returns

$25 DHL Express shipping worldwide from Cairo, Egypt.
30-day returns, buyer pays return shipping.