First thing with antique boat

I get boats from people who have a boat or found Dad’s, or Grand Dad’s boat somewhere and want to know its worth. The first thing I do is to wash the boat with mild soap. These boats were shellacked, so I use a damp cloth with denatured alcohol and carefully wipe off the accumulated grime an see what we have. You must be very careful as the alcohol can wipe off the decal. Then when ready, a new coat of shellac can be applied. I use Bullseye spray shellac.