When did John Barrowman star in the Baskin Robbins commercial?

In his book he talks about doing Opryland during the summers of '86 and '87 and that he did commercials during the off season. He then mentions one of the commercials was for Baskin Robbins that he received residuals well into the 90's for. So far I have no luck finding the commercial online. I clearly don't have Barney Stinsons video connections.