God, will this never end? :>)
On the early Roco cars, the truck pins had heads that were flat across and
had a fairly sharp rim on them (unlike some other manufacturers' cars that had
almost round headed pins).
Later on ('70s?) they had a dimple in the middle of the head. I am going to
check my cars further ,though, to see if there was intermixing in the later
cars. But, the early ones all had flat heads.
Doug
