Mystery to solve

Hello all:
My sister sent me the following message... can anyone clue her in? If so, please post to the blog (so we'll all know the answer) and I will forward it on to her.

Amy and I are trying to figure out a cryptic message on a framed piece of art she purchased a few years ago from an antique shop. It says "Swapped on 9/12/92 A.W.L.S. by" and then there is a name. Does that mean anything in art or museum terms?

Penny Grellier