Up for sale is 10 NEW after market eye cups made  high quality with metal and plastic frame that slips over the viewfinder frame, and a glass window to keep dust off your viewfinder.  You cannot use diopter lenses with these.  

For Olympus cameras such as OM-1 OM-2, OM-3 OM-4 OM4T, OM-4TI, OM-10, OM-PC OM-G etc.

The eye cup is  packaged in a clear plastic.

Please use shipping calculator for cost to your location.  Will ship anywhere in the world.