I read on another thread where someone indicated that the gold coin was limited to 150 coins and it was issued to the teachers of the 5 values. So that helps fill in some detail there.
In general, it would be nice if we had a way to build the coin database like the sunglasses or watches. Also, I suspect if we pool the collective knowledge we could gather a bit more info.
Btw, there was a set of books that came up for sale on eBay a few weeks ago. I didn’t quit appreciate what they were until after the sale. That along with the coin would have been pretty cool to obtain.