This sale is for one near mint condition Mamiya RZ67 prism bottom cover, suitable for use with any metered RZ67 type L2 prisms – the PD prism, Pro AE prism or Pro II AE prism, and also the RZ67 Pro AE chimney finder.
This bottom cover protects your prism when it has been removed from the camera. Try finding another one – these are almost impossible to find. This cover has minimal signs of use – really just one small mark on the edge.