This sale is for one really excellent condition Mamiya RZ67 / RB67 / 645 77mm front lens cap, suitable for use with all RB67 and RZ67 lenses except a few very large ones like the 75mm shift.
This Mamiya cap is in excellent condition with only very minor signs of use. It has the Mamiya name in chrome – this is the earlier RB67 cap. The pressure clips are working correctly to keep the cap on your lens. If you want a few caps (or other sizes), just ask.