Lenses for the large part are compatible across all M Frames (Mumbo/Gen 1 through to New M Frame). I have first Gen 1 all the way through to the latest reissues and interchange them between different colour and generation frames. Of my 50+ frames I've only run into 1 or 2 where it doesn't work, and this is usually down to worn mounting points in the frame.Thank you. Yes, it's the rarity of the color plus the apparently brief run of this style that cause me little hope. Still, as a new member I've yet to be able to look for it fully here. Who knows? I also have several lenses, and I don't know how compatible they'll be if I buy a new frame.
If you have some pictures if the lenses you can share I'll be able to confirm