Prophile speakers

Has anyone heard of Prophile speakers? I purchased them 30 years ago in Trexlertown, Pennsylvania.  I believe they were made by a very small upstart company. They sound fantastic.
Yes they were made by Source technology out of Connecticut. JSG Audio in Binghamton N.Y is no longer in business. The owner made Prophile.I believe he designed them and Source built them to his specs.
I bought them near Allentown, PA. I am looking to sell them. Any idea if they are worth anything at this point? Thanks for the reply.