strip spray paint off vintage drum (plastic)
I got a vintage snare drum with a wrap called "mother-of-pearl" but a teenager put brown spray paint on it. I've been researching and as far as I can tell the wrap is made of cellulose nitrate or celluloid acetate. I know nothing about these materials. What can I use to strip the brown spray paint off but try not to harm the original wrap? If I do harm the wrap, can I fine sand and polish it back? I don't want to irreparably etch it.
EDIT: added a few "after" photos.