Could be an early Joe's or another obscure California builder's work but I'm not going to lie the steering head seems a bit sketchy so I don't want to get your hopes up, I'd like to see a good photo of it to advise you one way or another at least as to the safety and some tips for improving it because everything can be improved upon. It may be better than it looks but I'd like to se you live to find a Taco or Flexo or some other highly sought after mini. I'm in Oklahoma and have found a huge variety and some have been truly special if not rare but that word is overly used. Also a clutch brake as a backup in case the tire finds water or oil in which case you my good man are not stopping at least not in the planned location. And let me know how that new sprocket adaptor for Azusa wheels works because I'm watching one on Ebay and really need a true running unit so I can use some Azusa's I have and buy more if it works out. Depending on where you live you could truly find a great vintage mini, till then I have a half dozen or more for sale at any given time and ship anywhere in the lower 48 my feedback here and on Ebay proceeds me. No special ones though but affordable buildable projects for the everyday average mini biker.