Lost rare vintage Spider-Man first appearance comic book at a flea market in Gadsden-Anniston.

I lost a rare vintage comic book, specifically Spider-Man's first appearance, while visiting a local flea market in Gadsden-Anniston last Saturday. I remember having it in my hands while browsing, but I must have set it down when I picked up another item. It's in good condition, and I'd like to get it back.