Seamaster 1950's - any info please

Based on my tiny limited knowledge. Most likely a caliber 352RG bumper movement. Found the same dial design in a gold case

Get case opened and check movement (to see if 352) and overall condition

If you want to wear it - clean movement - polish crystal (unless broken or deep scratches). Leave case and dial as is. Replace strap

Not wearing, but keeping - buy a small watch box and store away

Selling. Leave as is and don't do anything. Don't take it to any pawn shop or retail store as they will pay you nothing. Do any Ebay search on Omega Chronometer 352 models and do a comparison check on value. Members here could also help.

One question.

What is sitting to the left of the 6:00 index in first image? Looks like a broken piece of luminous material

DON

Many thanks for all the info. We found a similar one on-line but it had a gold case... wonder if the jewlers swapped an original gold case for this steel one !
When we get it serviced, would it be advisable to replace the glass or would it be better to just get it polished ? Don't want to do anything damaging. Thanks again for your help.

With a seventy year old watch there is no telling what it has experienced over the years. The only way of telling if the innards match the case reference would be to order an Extract From the Archives from Omega which cost around £90. If you aren't bothered, don't. I probably wouldn't myself.

If you wish to keep it, I refer to the above advice; make sure to use a competent and sympathetic watchmaker who are experienced in this sort of work. There are LOADS of great people to choose from in the UK, so don't worry. Omega offer these services too, but they are expensive and I don't feel there are any added value. Since the watch has radium on the dial (would have made the dots near the indices and the dark strips on the hands glow in the dark when new) they may choose to either replace the dial and hands or refuse to work on it.

You have a nice watch, and should take it to an expert who knows and understands preservation of vintage pieces. I suggest you look at this thread for watchmaker recommendations:

https://omegaforums.net/threads/any-“recommended”-uk-watchmakers.79749/

It is of course your watch, but collectors value originality and the natural aging. Trying to refinish or clean up the watch can seriously harm the value. Of course, as others say the crystal needs to be cleaned up or replaced which won't affect the value. Also, you will want to replace the strap. About the case swap, it will be more clear when the pros here can see photos of the movement. However, don't rule anything out, there was a lot of variability in Omega watches in the 50s. Many dial variations and exceptions to rules.