You see, from where I am standing, although I have several vintage 14" wheels, I am more likely to buy tires for my 15x4 wheels first. I would think a set of 7.60 or 7.10 15 would be a popular tire. It would be a real hot seller if you could get the Stahl name on it. Without that, i would probably not be as interested.
As for the L60-14, I think I'll hold off for a while.