Charming Old Pied Piper Tempera Painting on Brown Paper

I found this wonderful old painting--tempera, I believe, on brown paper bag or craft paper--in a very dirty old frame where it was taped to piece of cardboard and starting to deteriorate, but I loved it so much there was no way I was not going to rescue it! You can see that the area around the top of his shirt and right arm shows loss and is quite fragile; I've just set it atop a new sheet of cardboard to stabilize it for the time being, but best would probably be to mount it to a backing sheet and then get it in a frame. The colors are still very vivid, best of all I think this bright white flute and mint green cap!  The legend of the Pied Piper originated  in the Middle Ages, as a character from  the town of Hamelin in Germany. The earliest references describe a piper, dressed in multicolored ("pied") clothing, who was a rat-catcher hired by the town to lure rats away with his magic pipe. When the citizens refused to pay for his services as promised, he retaliates by using his instru