Sorry, just saw this.
It was a full sheepskin pelt that we purchased well over 10 years ago. Mary cut it down a bit, and also made a slot in it for the riders backrest.
I thought the name of the company was Alaskan Sheepskin, but a quick google search did not find them. I did find a company called Alaska Leather.
There is no model #, it is just a skin, and the riders backrest keeps it on the seat.
Kevin