Hello !

Got the chance to buy this watch. It says reference 1450022/3450022 on the inside of the backcase.
Dont really make sense to me, shall be a 3570.500 ? Casenumber 70 mill and movement 77mill dates it to 2004 ?

Give me your opinion on this Is the backcase from an older watch ? What is it worth ? No accessories, runs good.

 

I'm no expert but that bracelet and caseback sure aren't 145.022; you're probably right to say its a 3570.50

 

1450022 denotes a service caseback/modern reference. For example the new service 321 speedy casebacks are marked 1450012. So yes, probably a 3570.50.

 

Okey so its a service caseback ?

 

To my knowledge that caseback is correct for the reference and that caseback also happens to be the generic replacement caseback as well. So there is no way to tell if it's original to the watch. There seems to be some wear on the caseback so it lends to a higher probability of the caseback being original to the watch. Also you should check the engraving on the caseback. If it's thin-looking then I tend to think of it as laser engraved, pointing to modern.

 

First off, the number inside the case is not the model reference, but the case number.

Second the extra zero in the case back number does not mean it is a service case back, but simply a case back produced after Omega added another zero to case numbers.

Third, the movement and case have different serial numbers, and in an all original watch, those should be the same.

Fourth, the serial number on the case only shows 7 digits, not 8...

But assuming the first digit is a 7 (most likely is based on my experience), then...

Serial number: 77088168
Article ref: 35705000

The serial number on the movement appears to be 77089327, so...

Serial number: 77089327
Article ref: 35705000

So both case and movement are from a 375705000, but they did not start life together from the Omega factory.

Cheers, Al

 

Thanks for that input, that makes me want to back the deal. Thanks for all inputs.

 

Hey Al @Archer, Are the circular marks on the caseback from the dust cover?. The marks look like rotor rub and of course they can't be.

 

Yes

 

I can’t tell if it’s a tritium or luminova dial.

Should be tritium but also could have been replaced.

 

Not necessarily, as the tritium to superluminova transition happened in the mid-90's after the introduction of the rhodium-plated movement, 1499 bracelet and 357x models. The earliest of the 357x models actually had the gilt movement, tritium dials and 1499 bracelets and serials in the high 4 mil area, while the 7 mil serials didn't start showing up until around 1998 with the introduction of the 1998 bracelet. By that time the tritium dials had been phased out.

 

1999 was the change over.

 

Change over for what?

MWO has the changeover from Tritium to Superluminova as 1997, two years after the material made it to market.
http://www.moonwatchonly.com/omega-speedmaster-moonwatch/moonwatch-only-reviews/speedmasters-dials/

And sorry, my memory was a big foggy as the 1998 bracelet actually came in around 2000 or so. That was also when the first 7mil speedies came about, so the luminova dials were already implemented to all Speedies.

While the Speedy posted by the OP is indubitably a franken, the luminova dial is correct for the serial number range of the case and movement.

 

Nice use of the word "indubitably". It's so rare one has an opportunity to use it in a sentence.