
In this insightful post, hmmmcamu delves into the specifics of the 1967 OMEGA Seamaster 120, reference 135.027. This article serves as an essential guide for collectors, offering a detailed breakdown of its characteristics and crucial advice for navigating the vintage market. hmmmcamu's expertise highlights the nuances that differentiate authentic examples from watches assembled with non-original parts.






The Omega Seamaster 120, introduced in 1967, represents Omega's early foray into professional dive watches, positioned as a more accessible alternative to the Seamaster 300. It offered robust water resistance in a more compact and versatile case design, appealing to both enthusiasts and those seeking a capable sports watch for everyday wear and light diving activities. This reference helped solidify Omega's reputation in the burgeoning dive watch market of the era.
This particular Seamaster 120 features a stainless steel case, often with a diameter around 37mm, and is typically powered by an automatic mechanical movement, such as the Omega Caliber 552 or 565, known for their reliability. The watch is characterized by its rotating bezel, often bi-directional, and a screw-down case back, contributing to its water resistance. Dials varied, but commonly featured luminous hour markers and hands for legibility in low light conditions.
For collectors, the Seamaster 120 holds significance as a transitional model, bridging the gap between earlier Seamaster models and the more specialized dive watches that would follow. Its enduring design and robust construction mean that well-maintained examples can still perform to their original specifications, as demonstrated by successful pressure testing. It offers a tangible connection to Omega's heritage in aquatic timekeeping.
All the best, Jon
unfortunately I am afraid of buying one as there are so many Frankens made from donor movements and NOS case/dial/hands/bezel parts floating around, that scares me a bit.
finding vintage NOS parts is possible BUT difficult if not next to impossible, majority of the parts are bits and pieces from other Omega watches that use similar parts and or donor 120 watches which re sellers tend to do . There are LOADS of AFTERMARKET / NON OMEGA fake 120's and of course parts used on them sold individually, dead give away on fake parts are the dial text, real dial will have WHITE PRINT fake dials have GRAY text, the BEZEL is another dead give away, o course these have TRITIU
I didn't know so many were cobbled together from fake parts, that is even worse. If I wanted one of theseI would really do a "derp dive" first and expand my knowledge as much as possible. They are really great watches, but the market is a minefield, but that is the case on so many models of many brands unfortunately.
This thread is active on the Omega forum with 9 replies. Share your knowledge with fellow collectors.
Join the Discussion →