I HAVE POSTED 2 PICTURES TAKEN IN THE LATE 1950S AND NEED HELP IN DETERMINING WHAT MAKE AND MODEL MACHINE IT IS. I BELIEVE ITS A DAVID BRADLEY, AS YOU CAN SEE THERE IS A LARGE PULLEY ON THE LEFT SIDE AND THE GAS TANK RUNS FRONT TO BACK, NOT SIDE TO SIDE. ANYBODY HAVE ANY IDEAS AND IS THERE ONE...