Yeah. I've been searching for a while, and I'm having some trouble finding any good information about it.

I have an old (about 80-100 years old) Ocarina that belonged to my great great grandfather. It's clay. A lot of the markings are hard to make out. You can make out the words "Made in Austria" and there's also a "C6". It has two "stamps" on it, an oval one and a double-circle.

I'd like some information about it. Google turned up a site that had some information about it, but it wouldn't work on my computer. I know that some of you are better at internet searchs than I am, so could someone help me?