This was my first mini bike, it was in terrible shape when I got it around 26-27 years ago and it didn't get any better until today. I didn't know what it was when I got it, just that it was small, old and the price was right, FREE!. The previous owner welded on an ugly scrub brake, some angle iron near the foot rest bar and a trailer hitch ( Yep, a trailer hitch! ). the seat bracket was broken and the footrest bar was bent nearly 90 degrees on both ends. I later welded on a piece of 1" tubing for a foot rest bar and a piece of angle iron for a seat bracket but with the seat I used ( Chrysler Sno-Runner seat ), my knees hit the handlebars. I remedied that by cutting the handlebars off and using some old high-rise bicycle handlebars and clamps from an old Rupp snowmobile I had. I believe it is a '67 or '68 but there are a few things that make me question that. First is the combination of the small diameter steer tube with the small bolt pattern caliper. To the best of my knowledge the small diameter steer tube wasn't used on '68 bikes but the small bolt pattern calipers weren't used on '67 bikes. Another strange thing is the fender brackets are high up for 6" wheels and I didn't think they did that until '69. The original color is the metallic blue like the '68 bikes I have seen. I scratched off the paint on the right side axle truss to expose the serial number and even that is hard to decipher, it appears the serial number is 15168 or 19168 which seems low for a '68 bike I think. The frame is 13" tall from the engine plate to the bottom of the top frame rail which I thought was started in '68 but I'm not sure. Notice how the steer tube isn't centered either, the left side of the frame is actually longer than the right causing the steer tube to be off center!. My plan for this one is to make a runner out of it using the old parts from my nicer bikes that I am making even nicer. The axle bolts and fork bolt will come from my newly found to be '69 model 500. I am going to use the forks from my old Ruttman on this bike ( They are exactly like the originals ) and the chopped ones on the Ruttman since some Ruttman bikes had short forks with bolt on handlebars. I'll post progress pictures as I go but it won't be done anytime soon as it's last in a long line of other projects.