Picked this up from my neighbor for $100. Came with working 50cc china girl, weinmann rims (made in USA), Messinger seat, head badge bears made in Austria for Sears & Roebuck. Put in fresh plug & fuel and fired right up. Does anyone know the approximate year this rascal was produced? Going to do a frame-up restoration and relace with CB-110 rear (came with rag joint) & Sturmey Archer brake front hub.