I bought a used PO online but when I attempted to get a year of manufacture from Omega they sent me the following response. Unfortunately, we are unable to provide date of production on our watches. We only recognize the date of sale from the boutique/retailer to you. . Can you guys tell me approximately when this watch was made? The watch in question is a Omega 2200.51.00 Seamaster Planet Ocean XL serial number 85377XXX. Thanks
It appears your watch is from 2011 based on the serial number. It also has the 2500D movement. The following was taken from a thread on WUS: Thread: Omega 2500D ( http://forums.watchuseek.com/f20/omega-2500d-655641.html ) 2011 was when the 2500D movement first appeared. sometime mid 2011. any serial # higher than 8525 is 2500D. some 8525s are C's and some are D's.