Omega Speedmaster Professional 105.012 Guide

れい · 2009-11-25T18:18:44Z

Speedmaster experts discuss the Omega Speedy Pro 105.012: chrono hand originality, 'Professional' dial dating, and differences from the 145.012.

れい seeks expert opinions on his Omega Speedmaster Professional 105.012, specifically regarding its chrono hand and the distinction between it and the 145.012. This inquiry opens a valuable discussion on the nuances of vintage Speedmaster references, including dial variations, hand originality, and movement adjustments.

Guys, does this look right? It has the later chrono hand, but according to an article, the last period's 4th version had the later chrono hand type.

Also, what's the difference between this model and 145.012?

Thank you all in advance!

Key Points from the Discussion

The 105.012 is a landmark model, being the first Speedmaster with an asymmetric case, and was used in space, making it a significant piece of history.
The 105.012 is the first Speedmaster model to feature a 'Professional' dial with an applied Omega symbol, though early 'Professional' dials from 1963-1964 are uncommon.
It is common for vintage Speedmasters to have replacement hands, as original hands are hard to find and Omega service centers typically stock current-style hands.
Unlike Speedmaster movements (calibers 321 and 861), which are typically unadjusted, the caliber 321 found in Seamaster chronographs from the same era is often adjusted to two positions.
A 1963 Speedmaster Professional with an 'A.C.P.' dial (Automovil Club del Peru) and 'Swiss Made' without tritium reference is an uncommon and historically interesting variant.
Research into vintage Omega models can reveal inconsistencies, indicating that not all published information is exhaustive or perfectly accurate, and new discoveries are still made.

The Discussion

G99

Nov 26, 2009

the 105.012 is the first model to have a professional dial with applied Omega symbol. take a look at my previous post omega.watchprosite.com i appreciate from the pic you've given us the dials lume looks to be in excellent condition, but that could be due to several reasons like being kept in a box and not worn very often. the dial is the correct style for the model, the hands look very good and have possibly been replaced. its hard to find pieces with original hands these days and they only hav

れい

Nov 27, 2009

These are getting expensive now

れい

Nov 27, 2009

Nice indeed! But I need cal 321 version as well...

Anatol

Nov 28, 2009

This is my 105.012 from 1963, the first year of production. It sports the initials A.C.P. on the dial, for Automovil Club del Peru. At the bottom it simply says "Swiss Made" without any reference to tritium.

れい

Nov 28, 2009

Thanks. But no "T SWISS MADE T" is it intentional?

G99

Nov 29, 2009

Rei, i was going to comment on this 1963 'pro' model yesterday, but the kids were here and i was forcd to drive an Xbox :) my comment would have read that it is possible or even quite likely that this dial is a slightly later than original addition. the reason i have for saying that is all based on the research i did when i bought my 1964 105.012. as far as i could assertain late 64 dials were pretty much the first to have professional on them and they werent in mainstream issue until 1965 so a

Omega Speedmaster Professional 105.012 Guide

Key Points from the Discussion

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