I guess they are all for sale
Watching YouTube and saw a guy with five Auto Patrol 11 in the yard. One Auto Patrol 11 S/N 5K56 (single axle) about 1928-29 with the 3 cylinders diesel.
Auto Patrol part starts at 10:12 to 16:58
https://www.youtube.com/watch?v=tliI-aHwqMk