Missin bezel - 1960 Omega Seamaster Special ref 2975

Hello all. I posted this thread back in 2013 shortly after my dad died and left his watch to me.
https://omegaforums.net/threads/missing-bezel-1960-omega-seamaster-special.9268/

Life kind of got in the way and the watch has been sitting for several years. I am now trying to get back on track. I've located a guy to do the refurb on the watch. He has been unable to locate a replacement for the missing bezel. I've spent quite a long time online looking with no luck. I thought I would repost here to see if one of you had come across this part (or a donor watch) or might have some advice on where to hunt next. Thanks in advance.

This may be a dumb nooby question but here goes. The only bezel that is remotely similar that i have been able to find is this on ebay: https://www.ebay.com/itm/Vintage-Om...381054?hash=item1c95724ffe:g:mzQAAOSwWflZ67VA

it says its for a 1960s Railmaster 2914. Is there any way to tell if this might be a workaround for my 1960 Seamaster?

Try measuring your watch case, you need to know the inner & outer diameter of the bezel to have something to look for.

Thanks!