Wow, what a beauty. I have 2 treadles. One I have tried using, works good but I can't get the rythm of it yet.
The other I am tearing down and refurbishing it. It was frozen solid.
Yours looks in excellent shape. I would drive that far for one!
Enjoy it and Congratulations!
If you post it on the Vintage Sewing Machine Shop on this board, they can tell you more information about it. Before posting write down the serial number and that will help!
In the mean time, you can go to the following web site for general information.
http://www.singerco.com/support/serial_numbers.html