Vintage  Ceramic Ocarina Potato Flute Red w/ Gold Made in Austria?

About 6 inches long. It has two identifying marks impressed into the body but they are hard for me to read. I think it may say Made in Austria in one spot but I can't read the rest. You musicians and collectors may be able to figure out the rest. Also "D 5" is inscribed into the protruding piece.

IA reader of my posting confirmed my "Made In Austria" guess and was fairly confident that it was made by Heinrich Fiehn.