I'm trying to replace the crystal in my seahorse (and give the case a good clean/polish).
Having double checked the crystal won't just pop out with a crystal lift, I have tried to remove the bezel but it appears to be stuck fast! Probably because it dates from 1967 and at some point looks like there has been some water damage that has ruined the dial (however, the workings appear to be lovely and clean). There is a very thin brown ring of oxidisation (rust) that is around the inside of the case where it meets the crystal and also at the point where the stem is attached to the crown (which has SW imprinted into it - so ideally I'm looking to save it).
I'm presuming it's the oxidisation that's causing the sticking (and probably the fact it's 43 years old) so would a spray of WD40 help (or would there be any adverse effects of using it)?
Is there another product I should use to clean up the rust from around the end of the stem to prevent it getting any worse?
Or should I use an alternative case that'll need a bit more work to it to get it nice and clean - I have a couple of other 8980's that I bought in 'blurry ebay picture lottery' in the hope of getting a replacement dial?
Thanks for your help.