You are correct that they are rare. They come up from time to time and this one is in exceptional original condition. Many people "clean" off the factory browning which seriously reduces its appeal.

I believe he bought this off one of the auctions of a collection that is currently on EBay. If so he got a good deal.

Here is mine with hangers.

206 Yugo (12).JPG (54.5 KB, 119 downloads)