I have to trade a boys frame for 2 bikes, What "frame only" is more valuable to keep, a mid 1940's Cleveland Welding, or a 1957 Columbia, Pics enclosed, but I am trading frame only, Rick
I would keep that first (green) bike in one piece, that looks pretty unique, don't know much about value on either count but the Columbia probalby isn't worth a whole lot without the tank.