Like all posts I make, I'd like to preface it by apologizing for my ignorance. Hopefully, you guys can help rectify that. How can I find out what a particular watch should look like? If, for example, I'm looking for a 1952 Omega Seamaster (a watch I've been searching around for a bit), how can I get the pictures of all original versions (calendar, subdial, no subdial) of that watch in that year? Does such a resource exist? Would I, in theory, be able to use these pictures to help me authenticate a particular watch for sale? Thanks!