[quote=John Rochowicz;522660]Omega has always claimed in the past that COSC certificates are kept on file for 4-5 years. After that it's too late. I'm a bit puzzled why #1 on your list cannot be obtained. Caliber 2500C didn't debut until the end of 2004, so the movement couldn't have been tested more than 3 years ago. [/quote]
Well, I could be wrong on the 2500C. Maybe its a 2500B. ( It was) I haven't had the watch open, but it seemed to be 7 beats a second and not 8. I will get my friendly neighborhood Tourneau to put it on the timing machine and tell me.
But if Omega introduced the 2500C in 2004, that probably means they had sent watches to COSC for some time previously.
I'm puzzled about a lot of things with Omega these days. We have one instance (with a photo of the chronometer certificate) of an 80 million serial number from 2001 (not a co-axial) in the sticky at the top of the forum! [this is referencing another watch forum] Last time I checked 2001 is not equal to 2006!
Watch #1 would have to have been COSCed in 2002 or before if it is 5 years. So it took three years to make it into a watch, so now its 2005. It sat at an AD for two years before I snatched it up. I guess that's plausible. It makes me wonder if it is due for a service!
I guess that's why Omega has been so slippery on the service intervals for the co-axial. If the watch is going to be 5 years old by the time you buy it, saying it needs service in 3 years puts it right at the 8 years they originally talked about!
