Questions about lens caps

[fotomik]

Will a lens cap from a 50 Elmar (#14321) fit a 35 Summicron-M, type-4?
As it is not the same part number as the one that is supposed to fit it?

[kshapero]

I have lost or thrown away all my lens caps years ago.

[fotomik]

Well that's good for you. So have I, and now I need one.