Unknown Hobbit Chess Set

I recently received this chess set from my father. It was one of the ones he taught me on and has always been my favorite. Through the years, I've tried finding one like it and haven't been able to. Since he gave it to me, I renewed the search with the same result. Considering I can't find any information on it, I'm starting to think it's unlicensed.

The attachments have a (bad) picture of the whole set, along with some of the queens, knights, pawns, and bishops. The underside of each piece is stamped with either c.1978 or c.1979.

Any information anyone may have about where this set came from would be greatly appreciated.