Here are three Hoya filters to fit 43.5mm threaded lenses. The Olympus 35RC and the Olympus Trip 35 accept this filter size, as do some other Olympus cameras of that era. I have an orange, yellow, and green filter. All are in good condition. The yellow filter saw some use, the orange a bit less, and the green has only been out of its case a couple of times. I have the little plastic cases, but not the cardboard boxes. I'll ship them free in the US, at cost to exotic foreign locales. Paypall works for me. I don't want to break up the set unless I have to.