Is that a heat shield above the carb? Tires are replacements. Maybe the owner had a weight problem & needed the extra springs. My Model T had a similar double spring set up when I got it to help "steer" the car straight & minimize the wobble. Did you notice that the kick starter pins have been worked on. The kick stand looks like it's been modified & I'm curious as to what's going on with the ignition switch.
Anyway, it would be a nice bike for somebody. I'd date it to '53.
Mike Sal