Speedmaster 145.012 67 SP2

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My first Speedmaser and its strange peculiarities
Let’s start:

Prologue
This Speedmaster was given to my father in 1969
It was never overhauled and only in the 80s the Watch was repaired (to reinstall a pusher and replace the plexiglass).
I was informed that the reference was 105.012 66 CB but when I took the watch to be overhauled, I found that on the case back it was written the reference 145.012 67 and with different fonts: SP2.

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I asked Omega about the meaning of SP2
The answer was: “Special version 2” and it is in relation to different pushers, but they didn’t know the differences.
I googled all Speedmasters 145.012 67 SP2 and I found 4 cases with the reference 145.012 67 SP2 written on the case back; all these watches have a CB case.
This result is statistically significant, as I didn’t find different cases but only CB cases.
In addition, I required the Omega extract of the archive which confirm that it is a 145.012
I don't know if I can attach website links but, in the meantime, I attach pictures of my watch case back and the Omega extract

 
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These pushers look like 105.012 pushers, no 145.012...
 
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The pushers are threadless like 105.012 and the case Is like a CB (105.012) but the Speedmaster had only one owner and It was never modified.
It Is a 145.012 67 SP2 and I googled all Speedmasters145.012 67 SP2 and I found 4 cases with the reference 145.01267 SP2 written on the case back; all these watches have a CB case.(I attached the pictures).
I mean that the extension SP2 on a 145.012 case back Is in relation to Speedmaster with these differences
 
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So, are you suggesting that the 145.012-67 SP2 is a kind of transitional 105.012-66 CB?
Interesting to see it has an HF caseback and a CB case.
 
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I believe that for various reasons (Production reasons, costs reduction ..) Omega used available parts of 105.012.
In the specific case (145.012 67 SP2) Omega used cb cases and all 145.012 67 SP2 I found in the web ..... have a cb case
 
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@michael e has a knack for finding oddballs like these (I believe it is now 4 105.003-65 SP variants with 145.012 pushers, and similar hand configurations (i.e. 145.012 chrono hands) all within a narrow range of serials...).

Interesting to see 3 of 4 have a HF caseback and a CB case (one is missing caseback pictures).

FIFY 😀

Nothing beats a good mystery. Perhaps @Mario66 some more will surface over time...
 
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The first watch is mine.
It was from my father who received it as a gift from Goodyear in 1969
It has never been modified.
The first overhaul was done a month ago.
I posted some examples. The cases are clearly CB with back marked 145.012 67 SP2 and declared as 145.012 67 SP2
In practice, all 145.012 67 SP2 have this case
You can check with Google
Among these is the Collins Speedmaster, serviced by Omega and authenticated. Sold at auction in 2007 in Switzerland
 
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@michael e has a knack for finding oddballs like these (I believe it is now 4 105.003-65 SP variants with 145.012 pushers, and similar hand configurations (i.e. 145.012 chrono hands) all within a narrow range of serials...).



FIFY 😀

Nothing beats a good mystery. Perhaps @Mario66 some more will surface over time...

I prefer to call them “interesting and mysterious pieces of Omega history”
Not Oddballs. 👍
There is still much to learn about watches like these, Omega themselves don’t know all the answers.
 
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I prefer to call them “interesting and mysterious pieces of Omega history”
Not Oddballs.

Absolutely correct! I humbly apologize 👍 (To me an oddball is not a negative connotation ... but then living with several languages daily a lot of things get overwritten...)
 
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Sorry ...for the misunderstanding
I agree with you
there are many facts that Omega does not remember
I can add that when I asked for the extract of the archive,Omega sent me an email asking for a photo of the inside of the caseback and I sent it.
 
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Absolutely correct! I humbly apologize 👍 (To me an oddball is not a negative connotation ... but then living with several languages daily a lot of things get overwritten...)

I was only pulling your leg 😉
 
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when I asked for the extract of the archive,Omega sent me an email asking for a photo of the inside of the caseback and I sent it.

The fact that you got an archive is a good thing IMHO, as I assume you had to send pictures of the entire watch...and they gave it. Perhaps you should give them a call and ask a bit more?
 
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@michael e :
thanks for the link 👍 ... very interesting and representative of these "peculiarities"

@eugeneandresson:
The Omega extract was required attaching front and back photos plus photo of the Caliber SN.
Then, after Omega request, I provided a photo of the reference marked inside/behind the caseback.
Obviously, I highlighted my case to Omega as well as the others (attaching the links)
I showed the main differences (threadless pushers and case with angular lugs ... basically a CB case).
My question was forwarded to Omega Bienne but the answer was that the watch has special parts (Special Version 2), special pushers, but there is no memory of what, when and why ...

I could see other "oddballs" (I’m learning 😀 ) on the forum: ie, Speedmaster with "Back-to-Birth Traceability" and double reference marked on the back (105.012 HF case or only caseback used to produce Speedmaster 145.012 SP) etc.

Regarding the specific case, there is a possible correlation between 145.012 67 SP2 and CB case

Photo of my Speedmaster after overhaul :
 
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also on seamaster 300

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