Genuine Omega Caseback 166.0174 366.0833 Stainless Steel 33mm Vintage 1970s Part

About this item

An original vintage Omega caseback for case reference 166.0174, sold on its own as a spare part. The outside carries the engraved Omega symbol and "OMEGA" inside a circle, with six notches around the edge for a caseback opener (screw-down type). The inside is stamped "ACIER INOXYDABLE", the Omega Watch Co. triangle with "FAB. SUISSE SWISS MADE", a case-maker hallmark, and the numbers "166 0174" and "366 0833". A black gasket is fitted on the rim. Measured diameter: 33.3mm.

Brand heritage

Omega was founded by Louis Brandt in La Chaux-de-Fonds, Switzerland, in 1848 and moved to Biel/Bienne in 1880. The seven-digit 166.xxxx reference format used here identifies Omega's steel automatic cases of the late 1960s and 1970s.

Why this one is special

• Genuine Omega part, with Omega Watch Co. triangle and Swiss Made stamps inside
• Exact case reference 166.0174 stamped inside, so it is easy to match to your watch
• Solid stainless steel screw-down back with gasket fitted
• A practical replacement for a damaged or missing back, or for a restoration project

Specifications

• Brand: Omega
• Part: caseback (screw-down, 6-notch)
• Stamped references: 166 0174 / 366 0833
• Material: stainless steel ("ACIER INOXYDABLE")
• Diameter: 33.3mm (measured)
• Origin: Switzerland ("FAB. SUISSE SWISS MADE")
• Era: 1970s

Condition

Pre-owned, sold as shown. The outer surface has scratches and light marks from use, and there is wear around the notches. The engraved Omega logo and the inside stamps are clear. The inside shows light tool marks and some dark residue around the gasket. Please check all photos carefully as they are part of the description.

What's included

The caseback with its fitted gasket, as shown. No watch, case, movement, box or papers.

Shipping & Returns

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