145.00.22 dual reference model information

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I’d like to find out more about my Speedmaster. It is a 145.00.22 transitional model with a serial of 46xxxx and a tritium dial. Is it correct that it might have a dual reference number as 3590 or 3570?
 
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You will raise some eyebrows using the adjective 'transitional' as that is usually reserved in Speedy circles for the very first 145.022, the -68 iteration. Why do you say it is a transitional? The latest 46m Speedy was dated April 1985 so I don't think it is either a 3590 or 3570, just a 80s 145.022. The 4.2.2. PIC code reference system didn't come in until the end of the 1980s.
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You will raise some eyebrows using the adjective 'transitional' as that is usually reserved in Speedy circles for the very first 145.022, the -68 iteration. Why do you say it is a transitional? The latest 46m Speedy was dated April 1985 so I don't think it is either a 3590 or 3570, just a 80s 145.022. The 4.2.2. PIC code reference system didn't come in until the end of the 1980s.
Many thanks. I’ve checked serial and it’s 1997 right at the end of the 145 run.
 
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Many thanks. I’ve checked serial and it’s 1997 right at the end of the 145 run.

You sure about that? MWO book says the 145.022 ranges from 44M - 48M.

I've done a little searching for a birth year (1980) watch for myself and from the extracts that I've been able to find from 1979-1981, most of them are in the 44,xxx,xxx range.

I'm in agreement with @padders that the serial # would suggest that it's highly likely a mid-80's Speedmaster vs. 3590.50 or 3570.50
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Many thanks. I’ve checked serial and it’s 1997 right at the end of the 145 run.
Checked the serial how? Are you sure it’s a 46m serial? If so it’s not from the 1990s or at least the movement isn’t. A 3570.50 model would be on 48m or 77m. The caseback may give clues as the inner markings changed during the 80s and 90s.
 
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Apologies to both. I will recheck serial but I do remember checking on Speedmaster101 and it sits right in the 861/1861 movement range. Should I have said ‘dual reference’?
 
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Ok so 48.3m is likely to be an early tritium dial 3570,50 then. There is no dual reference model, it’s either/or. Is the movement marked 861 or 1861? If the latter it’s a 3570, if the former it could be either. Be aware that all the 1990s onwards models say 145.0022 in the caseback, it is the PIC that changes and that isn’t actually stamped on the watch anywhere. The biggest external tell is the bracelet which unfortunately it seems you don’t have.
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Ok so 48.3m is likely be an early tritium dial 3570,50 then. There is no dual reference model, it’s either/or. Is the movement marked 861 or 1861?
That I haven’t checked. I will recheck full serial number. My receipt shows it as 145.00. I’m just interested in finding out what I can. Thank you for your help.
 
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That I haven’t checked. I will recheck full serial number. My receipt shows it as 145.00. I’m just interested in finding out what I can. Thank you for your help.
Fair enough. Check the movement ref next.

ps I do see what you mean about transitional now. The early 3570s from 97-98 can be viewed in that way.
 
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By using a dummy serial of 48,364,500 (ie the mid point), ILMS (productiondateprediction) has that as a 3570 from circa Sept 1997.
I've used the exact number on ilovemyspeedmaster.com and get the same. Thanks for your help
 
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I've done a bit more digging, the dual ref is 145.0022 & 345.0022, there's a few online with similar serial numbers. When lockdown ends here I'll take it to someone to have a look at the movement. It's definitely a tritium dial!!
 
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But it is not a transitional. You need to edit the thread title. Probably not n the right forum.
 
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But it is not a transitional. You need to edit the thread title. Probably not n the right forum.
Done.
 
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To be fair, we have just recently discussed where the vintage to modern boundary now sits and one suggestion was that the cut off could now be considered the Tritium to SL transition which occurred 1997-98 in Omega. This watch would therefore be considered Nouveau vintage 😉

ps for the OP, don't get too excited about the 345/145 double description, the 345 just means it was a watch that came on the bracelet from the factory, it is not significant. Note yours has no bracelet so its technically a 145!
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Thank you to everyone. I’ve learned quite a bit. I contacted seller, who confirmed the model is in fact very late 145.00 and 1861 movement and the dual reference was as the model changed to 3570 as co-marked in some casebacks.
 
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Thank you to everyone. I’ve learned quite a bit. I contacted seller, who confirmed the model is in fact very late 145.00 and 1861 movement and the dual reference was as the model changed to 3570 as co-marked in some casebacks.
It is not a 145.00, there is no such thing. It has the 145.0022 case ref (like every other Speedy since ~1990, prior to that they were numbered 145.022), but is one of the earliest 1861 movement watches, prior to ~1996 they used the very similar 861. The watch PIC (an internal code for identifying the retail package) changed shortly before your watch was made from 3590 to 3570. There is not dual reference as such going on. 345.0022 and 145.0022 are one and the same in reality.

Yes it is needlessly complicated and confusing I agree!
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