Want to Buy Nikon Series E 50mm rubber focus ring

Do you have a fungus-infested or seized up Series E 50mm 1.8? I want the rubber focus ring off it, mine stretched for some reason so I've been brass-knuckling it.

Offer up!

I forget the diameter of the barrel, as I no longer have this lens, but you might be able to slip one of those rubber bracelets (popularized by the livestrong yellow ones) onto it to give you a better grip.