Focusing screens 1-4 for OLYMPUS OM-1, OM-2, etc. are for sale. Compared to the standard 1-1 microprism of the OM-1 and OM-2, the entire surface is matte, so even if you use a slightly darker lens, there is no microprism, so there is no shadowing. It is a used item, but I think it is clean with no scratches. The items to be sold are the ones in the image. Basically, I would like to ask those who understand that it is a used item. My items are only on mercari, so you can buy them immediately, so please feel free to purchase them.