Olympus Microscope EY455 Yellow Contrast Filter. Olympus Microscope 19mm yellow

Olympus EY455 Yellow Round Microscope Excitation Filter (23mm Diameter)

olympus microscope EY-455 EXCITER 32mm FILTER:

Olympus microscope EY-455 EXCITER 32mm FILTER

Olympus microscope EY455 Exiter Filter 32mm

Olympus Microscope 45-LBD-IF Daylight Blue Filter

Olympus Microscope Supplemental Filter Y 455

NOS Olympus Microscope Filter Set of Three Blue Yellow Green 30mm x 13mm