This sale is for a near mint condition Mamiya 645 Super AE Prism Finder N, fully tested and in perfect working order. It is suitable for use with the newer Mamiya 645 Super, Pro and ProTL cameras and will not fit the earlier M645 models.
This prism is in superb near mint condition. There are a couple of very light scuffs on the top but otherwise it is just about perfect, with perfect glass and no problems at all. It comes complete with the (often lost) rear eyecup.
Instructions for this prism can be downloaded from this website. This AE prism is functionally identical to the later 645 Pro AE prism FE401 – just in a different shaped case.