This sale is for one difficult to find, really excellent condition rubber eyecup for any Mamiya later type RB67 / RZ67 prism finder – the RB67/RZ67 standard (type L2) non-metered prism, RB67 PD prism, RZ67 Pro PD and AE prisms and the RZ67 Pro II AE prism.
This eyecup has minimal distortion, and is undamaged. No rot on this one. You won’t find a better one – or any other one at all – in a hurry.
Extremely hard to find in any condition.