This is a drop leaf table that has some spots (the white spots in photo)
where the finish is completely gone. The table is about 70 years old. I have
know idea what took the finish off. It is a hand me down from my mother. I
do not want to re-finish the whole table just touch up the real bad areas.
The spots are are glossy looking and very smooth like glass.

I posted this in rec.woodworking without pics for discussion

Thanks for your help.