Well, this is a touchy one here... I used soft scrub with bleach and a Scotch brite pad. Get the lens and pad wet then add the soft scrub and lightly wipe. I have done about 20 sets of lenses like this and haven't had any problems with it. I was told to do it this way buy a collector that's been doing it for years. Be careful not to scrub to hard though.


Looking for anything from Hoosier Pete, Platolene 500 and Red Bird.