Replacing Prism? (e.g.: Kodak Retina Reflex S)

[Sumarongi]

Problem that many old SLRs have: desilvering.

In my case, it's the Kodak Retina Reflex S acutely, but I suppose my Leicaflex SL should also be taken care of in the not-so-distant future.

Is there a definitive answer (list) what prisms of more recent/cheap scrap SLRs can be taken for a necessary transpant?

Thank you 🙂

edit: dear MOD, thread title should read "Replacing Prism? (e.g.: Kodak Retina Reflex S, Leicaflex SL ...)" -- can you please correct that?