I have a salesman sample J.D.Adams pull type grader from around the turn of the century (1900). Grader is nickel plated with JDA stamped on one side and the number 17 stamped on other side. It is different then any of the later Adams grader in that it only has two wheels and uses levers to adjust blade instead of the wheels like later models. Has seat on front for teamster and seat on rear for operator. Grader is about 18 inches long when wooden draw bar attached.