Omega

Somehow, as not very knowledgeable about vintage Omega’s, I’m not sure if this combination exists? Should it have a bezel in black or not? Is the lollipop hand possible / correct? Is the writing on the dial correct? I know, a lot of questions and honestly...  

But here is a pic of the 57 Trilogy Seamaster Reissue. To me, that should have a black divers bezel, and that seconds hand looks a little off to me. Hopefully someone else with more knowledge and experience of vintage Omegas can chime in ...  

Seamaster 300 ck-2913-7 Lollipop and also related content www.watchprosite.com You are missing the bakelite Bezel which makes it more confusing. There was a post about this exact watch in Mar 2021 on the Omega forums

. . . the ref number is stamped in the caseback, but even without that photo it's easy to tell by the caliber number. Ref 2913 employed cal 501 from its inception thru its last iteration; when cal 550 / 552 replaced the first generation full-rotor Omega a... 

As I read of your find, I thought of the expert names and all of them came up with advice! I could thing the second hand as being a service hand???? Good luck! David