I was going through a wood salvage store and discovered a bunch of
molding and trim pieces of tiger maple. One really nice wide piece of
crown molding as well as some other smaller pieces that are now sitting
in my garage.

The question is how to clean them. Some pieces only seem to have a
clear finish on them but others have a darker finish (I'm hoping that
they were not stained).

the question is how to best clean them of finish etc