This sale is for a really excellent condition Mamiya C No. 2 split image / microprism focus screen, suitable for use with all C220 and most C330 models – and possibly the earlier cameras but I do not have any earlier types to try.
This screen is in great condition except for just a trace of dust and a little dirt around the edges, but it is otherwise unmarked. It is in the wrong No. 7 box – but this is definitely the split image / microprism screen as you can see in the last photo.