Lost rare vintage 1980s superhero action figure in clear plastic case at a flea market in Deep East Texas.

I lost a rare vintage action figure from the 1980s while visiting a flea market in Deep East Texas last weekend. It was in a clear plastic case and the figure is of a superhero style. I noticed it was gone right after I looked at some old dolls, so I may have set it down on a table or in someone else's space. This was a cherished piece of my collection, and I'm hoping someone might have come across it.