Vintage CAT Caterpillar Tactor Co Parts Catalog Lot of 14 1940s- 50s Diesel No 12 Motor Grader, D9 Tractor, Diesel no 12 Auto Patrol, No 80 Scraper, DW21 Tractor, D4 Tractor, No 23, 25, 27, 29 Cable Control, No 21 Scraper. Well Loved. SEE PICTURES