How do I tell what year my Omega Seamaster is?

The serial number is one way to tell what year your Omega Seamaster watch is from. You'll find this number on the back of the case. Once you have located the number, consult trusted online resources to identify the manufacturing years that correspond to that number. Another option is to have your ring assessed by a licensed appraiser or knowledgeable watch dealer. On 1stDibs, shop a selection of Omega watches.