You might like to read my version of This Old House. That's where I salvaged these glass handles (four of them) from the kitchen. With my brother's strong help. The bolts were rusted. Just click here.
The handles were covered with old paint so I soaked them in ammonia and simply wiped them clean. Must have been latex paint as I'm not certain that would work on oil based paint. But I'm no expert, so if you wanna try that, go ahead.
Found some fittings at the hardware store and installed these on the four cupboard doors behind the tub. I love that these are "originals" from "Our Old House" and not modern, new ones from the store.
Nobody else knows but me (and you) but it pleases me to know. I'll have good memories every time I open these doors.