Long + short of it -- I have a vintage Dorly Water Elf and acquired it sans bezel. Apparently the original watch came w/ four bezels; a tachymeter, countdown bezel, world timer, and polished. Quite cool.
I've been able to back into measurements from another collector in Australia who measured in interior and exterior diameter. Does anyone have floating around their parts pile they're willing to part with?

Or even have a similar era diver that matches this so I can focus my search on eBay for parts watches I know will work?
Or a parts supplier or seller you'd recommend?
Interior Diameter: 31.5MM
Interior Diameter to underside lip: 33.7MM
Exterior Diameter: 36.43
Attached are some lo-fi mocks that I made of the measurements for a friend to help render in cad. Have begun exploring getting one machined or trying to 3D print.
Thanks for any + all help. Mean it.