A rare Doll et cie #506 Roller Model Engine. A spirit-fuelled roller, produced in Germany. This model appears to be mostly original and in a good, presentable condition. The missing pieces include a locking washer to secure the rear axle (meaning the rear wheels do come loose), bottom of the drivers’ cab and the chimney is an aftermarket replacement. Original spirit burner tray included. The most turns over freely by hand however has not been steam tested for the purposes of this listing. Any questions feel free to ask.