This looks interesting:
http://www.shopgoodwill.com/viewItem.asp?itemID=5882770
The description says:
Both about 12.5in long. Wooden flutes with traditional Croatian Decoration. Dvorgrle is a double flute with 4 holes on one pipe and 3 on the other. Fipple flute looks like a Croatian flute called a strancica. No label or trademark.
I’m not interested, but thought someone here might be!