Walter, you are correct in that Truck plates were different many places. Back in the day (mid 60's) in California, recall that truck plates were 2 letters and then numbers, while car plates were 3 letters and 3 numbers. Also there's a 2-ton 1952 AD truck up here sporting YOM plates that have "COMMERCIAL" on them, where everything else I've found don't have that on them. Alaska also had Truck plates in the '70's with 2 letters and 4 numbers versus car plates with 3 and 3.
