I’ve had it literally for as long as I can remember, easily over a decade. I don’t see anything on it indicating what set specifically. The copyright around the WotC logo shows 1999 as the latest date, so I imagine it can’t be past base set 2? I guess it could be up to gym challenge if it was made in Japan, but having the wizards logo and copyright I think it’s strictly US
Any help is appreciated! Since I have it, I can take close ups of any part you might want to see
here’s a tweet I found from someone who has a higher quality image of one side