Glasses and eyewear

These glasses were given to me by an old fella a couple years ago, and happen to be an almost perfect match for my vision!

I recently replaced the rotted earpiece tips, but I don't know where to find new nose pieces for them. See, they don't screw on like modern glasses, they have fold-in metal tabs to hold them on..

I am extremely thankful for these glasses, as they were basically a gift from a time capsule from 1988 that just works perfectly for me (plus seems much more scratch resistant than modern stuff).

Anyways, is it possible to find new nose pieces with the fold-in metal tabs?

Bonus homemade custom keyring emergency prescription lens in the photo..