I have a bottle of Eau de Gucci but it is different, and probably a lot more recent, than yours. I think mine is from the '90s.
Just curious. Mine has "Scannon S.A." on the back, and also "Made in Germany". Does yours have any manufacturing info on it?
According to Perfume Intelligence, the original Eau de Gucci was released in 1982, so yours would be no older than that.
My version is the reformulated one dating from 1993.