My wife put a piece of pottery on a chair and it stayed there for a couple
of hours. The finish in that area has turned white. It's not something
sitting on top of the finish, it seems to have changed the finish (Lacquer).
I am guessing that some lime or something is the bare pottery bottom but I
don't know that.

Any ideas on how to repair. There are three pictures of the problem on the
chair and one of the offending pottery. I have not sent pictures before so
if I mess up, I'll try again.

Thx

Kevin