Lehmann NA-OB donkey cart #680. Production run was from 1917  to 1938.   Toy is all lithographed tin and not working.   If  it was working you wind with the attached key the farmer drives the cart in a  circle while bouncing up and down. The up and down action of the cart is caused  by the left wheel being mounted off center. Toy is 6” long, 2¾” wide including  the key and 3¼” high.  As I said the toy is not working, and the horse is  missing it's wheels.  Look like it could be fixed if you know what you're  doing, or just clean it up and use it as a static display.  Thanks for looking.      xxxx-1710-10  zurko