Is there something odd about my Omega 105.012 ?

Dunjour · Oct 27, 2026

Hello there,
I got an Omega 105.012 for some time (a "-64" reference) but the serial number (24001821) seems to correspond to a "-66."
Is this possible?
Thanks for your insights.

YY77 · Oct 27, 2026

This is what ilovemyspeedmaster.com says

Screenshot_20261027_162323_Chrome Beta.webp

Dunjour · Oct 27, 2026

Thanks for your quick feedback
Could a '-64' have been produced in '66?

Dunjour · Oct 27, 2026

And your picture seems to show that this serial number corresponds to a -65 Speedmaster, neither a -64 nor a -66

YY77 · Oct 27, 2026

Dunjour
And your picture seems to show that this serial number corresponds to a -65 Speedmaster, neither a -64 nor a -66

Ilms based this on received EOA's so could be a guess, an actual extract of the archives would tell you exactly what it should be but that hasn't been opened up again by Omega.

ZWD · Oct 27, 2026

@Dunjour Could you please provide some better photography of the dial. Also a good shot of the side profiles of the case would be helpful.

Dunjour · Oct 27, 2026

ZWD
@Dunjour Could you please provide some better photography of the dial. Also a good shot of the side profiles of the case would be helpful.

Of course ! Hope these will help.
I noticed the Omega logo engraved on the center of the glass, and both hands and index seem in a relatively good shape. Also, DON bezel, short/fat pushers seem all original.

Dunjour · Oct 27, 2026

And I have a 1506/516 strap with it

ZWD · Oct 27, 2026

If you dont mind taking a few more and try with a longer camera lens that is not directly next to the watch, difficult to tell geometry with the wide angle close ups. Also for the dial if you could capture one that is more directly facing the dial rather than way off to the side.

Dunjour · Oct 27, 2026

Could these be ok ? Thank you for your help

Dunjour · Oct 28, 2026

More photos

AHW · Oct 28, 2026

The below is from Moonwatch Only. So unfortunately according to that your serial number is well out of range for what would be considered correct for a -64.

The good news is that your serial number is very close to Neil Armstrong’s Speedmaster.

Dunjour · Oct 28, 2026

So mine should be a -65 ?
Maybe the case back is from an other watch ? This is odd because the watch was purchased in the late 60’ and stayed since in the same family.
Good news about its proximity with Armstrong’s Speed 😀

ZWD · Oct 28, 2026

clarity is lost quite a bit on those for the dial features in those photographs.

One thing that is clear is that the "t swiss t" is narrow and shorter, typical of the B2.MK2 type that is associated with some of the NASA watches. The other features are unclear and hard to see, or covered up with the hands. Serial is earlier but lines up with many of these examples in the early 2400XXXX range.

For the view of the sides of the case, the new photographs do not give a view as they are shot from above. Getting the correct view would mean having the camera level and orthogonal with the side of the case. Trying to see if this case matches with the MK1.5 type thin case as outlined by Chronoholic.

Dunjour · Oct 28, 2026

I will take some pictures from the sides as you mentioned
I still can show these

padders · Oct 28, 2026

YY77
Ilms based this on received EOA's so could be a guess, an actual extract of the archives would tell you exactly what it should be but that hasn't been opened up again by Omega.

No it wouldn't. The extract doesn't specifically mention the iteration, just the core ref. An extract for this watch would say simply 105.012 and that is that. If indeed the number is from a Speedmaster...

Personally I too think the serial is too late for a -64 and I suspect either the back or more worryingly the movement has been swapped. Meaning an extract could come back with a different model altogether like a Seamaster Chronograph. Sorry for the negativity but some -65 models are seen with 22m serials so this is IMO far too late for a -64. That said, it is not unknown for some Speedys to have unicorn serials so never say never.

ZWD · Oct 28, 2026

Sorry but these are all very blurry. These differences in the dials are very subtle. It does look like a Mk2 Dial, but difficult to be sure unless you can provide sharper photography of the features that are outlined in Chronoholic's write up. (Omega Speedmaster Professsional, "2", "3", "4"). Your last photo achieved a decent result of the "T SWISS T" but that is already a feature that I can see clearly in your previous photos.

If it is a MK2 dial and has a MK1.5 midcase, that would line up with the serial number pretty well.
The caseback would be the outliner as those features are typically seen with a S-65 caseback.

Aludic · Oct 28, 2026

For what it's worth, but based on many hundreds of Speedmaster EoA's on file: the serial range of this movement isn't entirely strange to Speedmasters. I've seen at least two other Speedmasters with a 24001xxx serial. However, both were 105.003-65, making this 105.012-64 in that range still a sole exception (thus far). Just to illustrate the occasional random outliers; I've also seen a -64 with 240035xx, so it's not entirely impossible.

Dunjour · Oct 28, 2026

I really want to thank you all for your time and dedication about this slightly mysterious Speed 😀
I will provide more pictures tomorrow (it’s a bit to late now for a good lighting)

Dunjour · Tues. 1:01pm

Sorry for the delay
Here some news picts of the watch, from the sides and showing more details on the dial. Please feel free to share your advices, I would be happy to read them.