Here is a pic of a 361 I found on ebay a while back. It was actually a slide that was for sale. I don't have any other info but it's a great picture regardless...
Notice that the sign is taped to the door and there is some other writing underneath it. Wonder who the truck really belonged to or who had it before this picture was taken?
That's what I was thinking, but couldn't think of the word (too early in the morning to be thinking). Or possibly bought used from someone else, and the sign is temporary.