I just got some old 50s bingo playfields that I want to use as art. Theyre pretty clean except
one which has that old brown haze to it. I rubbed a corner with a damp rag and it came off
with some elbow grease, so I think its cleanable. I'm wondering what the dos and donts
are with these playfields. I dont know if Novus, carnuba wax, etc are off limits or what.
Any advice would be appreciated