Hello, I have been reading feverishly about vintage Omegas. There is so much to learn, correct hands, dial, correct case, so on and so forth. Where do you guys learn all of this? Anyhow, the anticipation got to me and I purchased a 2635-6 with low 13m serial number putting it around 1952. The only problem is the engraving on the case back. Can one source a new case back or is it ill advised? I would also like your guys opinions on it, don't worry you will not hurt my feelings, I am trying to learn and you guys seem knowledgeable. I did not take the pics, so if you need more I will take some when I have hands on the watch. Thanks for your time.