It's nothing to do with the mount; all to do with the filter thread, (the opposite end of the lens).
Just check the filter thread size and then look around for a PF of that size. If you intend using on a film camera only you'll be ok with a linear PF. If you expect to use the lenses/PF on a digital camera, you'll need a circular PF.
If the filter threads are different sizes, then you could buy a PF for the larger one together with an adapter that'll allow you to mount the PF on the smaller one, but be aware if you go this route the lens hood for the smaller one won't fit with the larger PF.
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