Good evening, First of all, I'd like to introduce myself by saying I have lurked the forum for some time and just registered in order to try to join the club. The aesthetics of 50s and 60s Omegas delight me, so I would like to get something from that era. Nonetheless, my budget is limited. I feel like a CK 2503 would be a reasonable place to start since i) I like the way they look; ii) there are plenty of options; iii) they are not very expensive. My search narrowed down to this two watches and I'd like to know from you guys if you think any of them is a good place to start. Noticed the case on the first one has a little rust, is it too bad? Also there is something wrong with its crown. Is replaceable for one with the adequate size? The second one looked a little overly-polished to me, but maybe I should not complain since the price is not high. Appreciate any help and advice.