Got this for free at a show in Long Beach 1987. Thoughts?? Second free one. Sent from my iPhone using Tapatalk
It is a proof. These are super common, so not worth very much - but the history of where you got it is cool.
Numi-News often does promotions like that at shows (or at least did). One I remember was a business card stating Numismatic News was the best publication in the hobby "and here's your proof" with a proof early 60's cent in a cointain glued to the card.