Hi I have just joined and collect old sewing machines. This treadle was a 50th anniversary edition of the Model 15 Sphinx. It was manufactured in China in 1973 and sold through catalogs such as Fingerhut. They did sell for about $100 new. The cabinet is pressed board and not a whole lot of them survived. I have never sewn with one of these but have read reports that they were far inferior to the Model 15 originals.