A question about Speedmaster serial numbers

tommythunders · Mar 31, 2021

I understand that Speedmasters have a different numbering system than other Omegas to correlate SN to year of production. Does this apply to all Speedmasters or just the professional? For example, if I'm trying to find the production year of a Speedmaster Mark 4.5 would I look at Speedmaster SNs or standard Omega SNs? Thanks in advance.

Foo2rama · Mar 31, 2021

Applies to 321 and 861 movements

tommythunders · Mar 31, 2021

Foo2rama
Applies to 321 and 861 movements

Thanks!

tommythunders · Mar 31, 2021

So just to clarify, this would not apply to a Mark 4.5 with the Lemania 5100-based 1045 movement?

padders · Mar 31, 2021

At times the Speedmaster series does correspond with general production. A Mk4.5 is presumably from the 1970s, during that era the numbers were fairly in sync. What are the first 2 digits? If for instance they are somewhere from 32-39m then I would say it can be dated with a fair amount of confidence.

tommythunders · Mar 31, 2021

padders
At times the Speedmaster series does correspond with general production. A Mk4.5 is presumably from the 1970s, during that era the numbers were fairly in sync. What are the first 2 digits? If for instance they are somewhere from 32-39m then I would say it can be dated with a fair amount of confidence.

The one I'm looking at is a 45, which would make it a 1982 if it follows the standard numbering convention, but later if it followed Speedmaster numbering conventions.

padders · Mar 31, 2021

T tommythunders
The one I'm looking at is a 45, which would make it a 1982 if it follows the standard numbering convention, but later if it followed Speedmaster numbering conventions.

It would likely follow regular numbering so 1982-3 sounds about right then. An extract would tell you for sure.

A question about Speedmaster serial numbers

tommythunders

Foo2rama

tommythunders

tommythunders

padders

tommythunders

padders

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