I found this old tattered picture in a mechanic's paperwork folder from a Harley-Davidson dealership in PA. I have posted pictures and scans of stuff from this folder in the past. Most of the paperwork in the folder was from the late 50's and 60's. This picture was amongst the various notes and info, but with no explanation. The photographer was obviously focused on the bad ass spiked front wheel. Too bad I can't read the date on the AMA Safety banner hanging in the back ground.