This sale is for one brand new Mamiya RZ67 / RB67 fit 77mm front lens cap, suitable for use with all RB67 and RZ67 lenses except a few very large ones like the 75mm shift.
This pinch-type cap is brand new in original sealed packaging. Suitable for all 77mm filter size lenses, not just Mamiya.
When they are gone they are gone. If you want a few caps (or other sizes), just ask.