Hi there guys, I now own an Omega Seamaster 300M Divers watch, I was given the watch as payment for a debt owed to me. I have thoroughly researched the watch, and have contacted OMEGA, etc. Here is the issue, according to OMEGA directly, the watch is a reference number 2920.80.91 (Omega says model began in April 2006) , by virtue of it's serial number engraved on the lug of the watch. The original owner apparently changed out the watch blue band, and installed a watch bracelet on it, the same one as on the Ref number 2220.80.00 watch, which is the Casino Royale Seamaster 300M Diver Watch series. Omega tells me, in writing, that my watch (2920.80.91) and the 2220.80.00 watch are identical in every way, except for the different watch band/bracelet, was purchased overseas (Not in the USA) , and was manufactured in 2007 by OMEGA in Switzerland. If I were to try and sell this watch, what the heck do I use for reference number, since the adding of the 825/1503 bracelet actually makes it appear as if the watch is the 2220.80.00, but it is really the 2920.80.91,with an upgraded bracelet? The original blue band is not present. I have attached the info that Omega sent me directly to this post. I may take it to the Omega Boutique and have it fully serviced soon.