Collection of 4 Tractors on Treads - Offered Without Reserve - Starting life as a Doepke Caterpillar D6 Bulldozer, this big pressed steel toy was professionally converted into a one-of-a-kind pipe layer, special boom built to the left side is controlled by two cranks that raise and lower the boom and raise and lower the hooking device, finished in yellow and rides on black metal treads, driver's seat in black, smokestack in place, very good condition, 11.5" x 15" W x 10" H; Dual Wind-Up Tractor unknown maker, body of tractor in dark green with 50%+ paint loss, black steel treads, two wind-up motors, one for each axle, hook attached under driver's seat for towing trailers or other items, fair condition, 10.5" L x 6" W x 6.5" H; John Deere 450 Bulldozer by Ertl, die-cast, finished in yellow, has black driver's roof, good rubber treads, missing exhaust stack, some play wear, good condition, 5" L x 6" W x 6" H; Oliver OC-3 1/16th scale die-cast tractor by Ertl, dark green with red seat, 6" L x 5" W x 3.5" H, lot of 4.