Have a look at the Seamaster Calendars in the first post here:
https://omegaforums.net/threads/learn-how-to-fish.52603/
It'll tell you something about the second watch in your post...
The first one looks good. Be aware that no-name Omegas are, generally, a little less valuable than "named" versions of the same watch. Also, notice that it's only 9ct gold, not 14k or 18k.
Click to expand...