Maureen,
I think both the Schwäbish Gmünd and Belgian Lion are almost exactly the same, both are yellow and black.
The thing I wanted to say is that it was NOT made in 1980.
However there is one thing telling us it could be the belgium lion.
I am pretty sure the reason Schleich started with smurfs again in 1976 was the movie shown in Belgium then. And that BP then wanted smurfs for their promotion again. So therefore it could very well be the belgium lion.
BUT then made around 1977 instead. AND then later also used by the Belgium Ski team in 1980.