Okay, I'm totally new, but I'll take a stab at it.
1964 Omega Seamaster 600, reference 136.001, caliber 611.
To my relatively untrained eye it looks good. It's got the Ts next to "Swiss Made" along with the corresponding lume on the hands. No obvious signs of a redial to me. Fonts look good. Doesn't look like it has been polished. Some corrosion inside, but doesn't look too bad.
Now an actual expert can chime in and tell us how I did.馃榿