I'd like to replace a scratched crystal in my Seiko WW. The watch movement number is 8F32-0189. My understanding is that the 0189 part of that number is the case number. Anyhow, the one I would like is mineral glass type with the magnifier for the date. I can't seem to find out what part number that would be. Any help?

You need crystal part no. 290P61HN03. The crystal gasket part no. is 86565320.

Thank you very much. Where did you find this info Mike?

I looked it up on julesborel.com . They have a material database but you need a login.

You can use boley.de . It's in German but if you use Chrome browser it will translate pages for you as you view them.
Click on Referenz or Reference on left side, then select Seiko.
Mike