2 vintage omega watches. Need help finding the correct parts

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Hello i have two vintage omega watches. Their reference are 121.010 and 2398-2 . For the first watch i would like to know if it has its original crown and if not ,what is its original crown. For the second, i would like to have your opinion. Should I restore the dial, should I find a replacement,or should I leave it as it is? Thank you in advance
 
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Your 121.010 was introduced in 1962 so I would expect to see an Omega symbol on the crown.
The original part number for the crown (gold) is LA35002.

https://adnhorology.com/products/omega-069-la35002-gold-plated-crown

https://www.omegawatches.com/en-au/watch-omega-other-omega-ba-121-0010

Regarding the 2398 I would have the dial dusted with a fine sable brush and a puffer, nothing else.

Both watches should be sympathetically serviced of course.
 
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Got two versions on tap size for the caliber 265 - 6 or 7 from two different sites. Any new crown is going to be plated, so not a great match to the gold case, but not much you can do.

Other option is find out the exact tap size of the step and find a vintage gold filled crown. Doesn't need to be signed. Just something in the correct diameter and matching tap size. Also buy a new stem when you buy a new crown

Try a little Polywatch to see if the crystal will clean up. Might make the dial look a little better
 
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Your 121.010 was introduced in 1962 so I would expect to see an Omega symbol on the crown.
The original part number for the crown (gold) is LA35002.

https://adnhorology.com/products/omega-069-la35002-gold-plated-crown

https://www.omegawatches.com/en-au/watch-omega-other-omega-ba-121-0010

Regarding the 2398 I would have the dial dusted with a fine sable brush and a puffer, nothing else.

Both watches should be sympathetically serviced of course.
Thank you very much for your reply. I have both warched serviced but my photos are a bit bad
 
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DON DON
Got two versions on tap size for the caliber 265 - 6 or 7 from two different sites. Any new crown is going to be plated, so not a great match to the gold case, but not much you can do.

Other option is find out the exact tap size of the step and find a vintage gold filled crown. Doesn't need to be signed. Just something in the correct diameter and matching tap size. Also buy a new stem when you buy a new crown

Try a little Polywatch to see if the crystal will clean up. Might make the dial look a little better
Thank you for your reply