Hey, great site you've got. Some of the best pics, of terrific variety of bikes, I've ever seen. Attached are some photos of my recently completed 1973 Penton 125 Six-Day. Bike started out as a total junker, which had sat outside for years. It now starts first-kick, and runs perfectly. Incidently, the Steel Tanker you have the pic of, which was taken at the AMA museum, belongs to the original owner - Al Born - and the bike is serial # 003. Yep, it is the third Penton ever built. Al is among the original group of riders, who were hand-picked by John Penton to receive (and race and win and promote) the first ten Penton motorcycles produced.