70's Rolex & Tudor advice please

[zapokee]

Originally Posted by FZS1000

Option 1: Leave it as it is, great for sentimentality, not so good for resale
value ...

Barely affects resale value at all. The crystal is a 100-dollar disposable part.

Originally Posted by linesiders

If you are confident the crystal / watch is fairly waterproof: 3000 grit wetsand, 5000 grit wetsand, 7000 grit wetsand, followed by a polish of McGuires PlastX Headlamp polish, wrap the watch/bezel/insert in cloth so you don't inadvertently hit it.

I'm always nervous about advising DIY vintage repairs.

It's easy when YOU know how to do it, but for someome with no experience or in-person guidance, there's a whole world of possible hurt. Don't sand that insert!