The Durkopp factory was bombed in WW2 so there are a limited number of these machines out there, It is the Cadillac of cobbler machines. Very smooth mechanism and better than usual stitch regulating compared to the Adler or Singer cobblers. The walking foot will turn 360 degrees for tight places, It is a treadle but you can add a servo type motor as well, I have extra bobbins and 1 extra hook for it. CALL show contact info
. $850.