Replies

1. 
   byhammerandhand | Aug 14, 2009 01:48am | #1

   I have a finish indicator that indicates broad categories
   - NC or catalyzed lacquer
   - Oil based varnish
   - Everything else (2K, etc.)

   or you can try various solvents and see what softens it
   http://www.hardwoodlumberandmore.com/tipsheets/whatisthatfinish.html

   That said, if it's a factory finish in the last 50 years, it's probably a lacquer. I work on new furniture every day and see non-lacquer about a handful of times a year.

2. 
   Gretchen | Aug 14, 2009 01:52am | #2

   I might hate to put polyurethane on it for any reason, other than if it was already there.  ;o)

   Gretchen