145012 - 67 SP but serial # doesnt lineup?

I have this lovely Speedmaster Pro with a back cover that says 145012-67 , I had it sent out to Omega a 8 years ago and the onsite tech loved it said I had a keeper. said it was authentic cleaned it up a bit and sent it away for 3-4 months to Switzerland and when it returned it looked and worked great! They replaced band, bezel, crystal, a couple of gears and pieces. I have all the originals parts including dot over 90 bezel and a 1039 band with 516 shoulders.

the question I have is that the movement says 321, 17 jewels, etc.. all the right words on the inside but the 8 digit serial number seems to start with 2007 or what looks like 2C07 and that doesnt line up with a 145012 -1967?

Also not that its worth much on the Omega service receipt its says Serial NBR 1021769

over at Speedmaster101 it is noted the serial should be 2406 xxxx – 27xx xxxx

also other questions, I haven't found any other photos of a back cover 145012-67 with SP , ive seen an S and I've seen no letters? and what do you make of the freehand etching on the inside cover E300 on the right? and some other things on the left.


any info would great!

If its really worth it I will bring to jewelers to get some newer high quality photos.

thanks

A belated moment of silence for another vintage Speedmaster destroyed by Omega service <1 min pause inserted here>.

Welcome Billy, wish you would have joined us here on the forum 8 years ago before decided to send your watch to Omega for service. Their charter is to make watches that come into their service center look and operate as new, thus, destroying all the character and vintage value of the watch. You say they returned "all the parts" but I doubt you got the original dial back, which is a real shame. If in fact you did, its possible you could have a proper watchmaker return the watch to its former glory, if you care about that (which I suspect you might given you now seem to care about the movement serial number). Now, onto your questions, as best as I can add anything to this discussion....

All the non-factory etchings/engravings on the inner portion of your caseback are markings made by watchmakers who serviced this piece over the last 50 years. Its standard practice for them to leave their mark in this way. This is normal, and you can ignore those markings. The factory "SP 145-012 - 67 HF" is what you want to see, and we do here. As for the serial number on the movement your photo is extremely poor resolution/quality so its really hard to give you any feedback, other than I see a "22x07" to start, where the x could be a 0, a C or who knows what. '67 movements should begin no sooner than 2406 as you've discovered, so if yours is 22x0, that's more like 1964/65. It's not unheard of for movements and watch cases to get mixed/matched over a period of 50 years by matchmakers/sellers, who build up "fraken-watches" from multiple parts to sell a completed piece. You didn't give us much of the history of the watch, but presumably you acquired this decades after the original sale, and not from the original owner, so who knows. At this point, the watch is heavily molested (sorry to be blunt), so unless you intend to return it to its vintage condition using the parts you have and then attempt to resolve the mystery of the movement, I wouldn't worry about it, its a Speemaster Pro, its cool, and just enjoy it.

Not convinced the first digit is a 2. Totally different font than the “next” 2. May be artifactual?

I am also in the camp of no 22 at the start of the serial. While there is something in the picture, it is definitely different than the "other" 2, at least based on what we can see.

Measuring the space blocked and the 4 visible numbers, I say 4 numbers are blocked, making more of a case for the serial to start with one 2 vs 2.

Also, the OP states that the serial starts with 2007 or 2C07, he would know better than we do what the serial is and how many number he blacked out.

Disclaimer: I measured the serial number length using my thumb on the screen 😁

the 1st 2 is a ghost or shadow. is it possible the 2nd digit is just a bad 6 ? i mean real bad but would fit in serial # range.
its funny the one thing they did not return was the original dial so I had thought they just cleaned it up.


thanks for all the insight.,

not really sure why I hid the number 😜

yes its an 8 digit serial number


and there is what looks like an I (slightly larger font) above the 1st 2

I also see the first 2, but its obviously not the same font so I think the next logical choice is 26mm. Knowing Speedmasters were produced in batches I did a quick search based on the other digits visible in the picture (26071) and found several examples with 26.071.xxx serial number, here is one that sold on this forum:

https://omegaforums.net/threads/sold-omega-speedmaster-145-012-67-sp-wextract.119656/

IMHO that is convincing evidence that the serial number is 26mm and within range of what would be expected on your reference. As an interesting side note some of the other Speedies I found from the batch are strangely referenced as 145.012-68.

yep, im now convinced as well, serial 2607xxxx. that shadow 2 is strange, I've never noticed something like that before.

ok I grabbed a photo with a better iPhone and it looks like a 26 which according to speedmaster101

• 145.012-67 2406 xxxx – 27xx xxxx

so that serial number jives with the model number and it being a 321 movement.

what's a good insurance value as I dont have a rider and would figure i should get one?
I have the original band, the original dot over 90 bezel and crystal, 3 original button/crown, 2 little original gears, original gasket and service receipt from Omega NYC for the this service 8 yrs ago. For whatever reason they did not return the original face.

thanks again for all the help