210W-K 4524 is on the VID plate (where is the plate located)?

It is 1950 or earlier, because it has the driver-side cowl-vent.

Where is the gas tank filler?

Does it have modern-style tube shock absorbers?

These next items might have changed over the years, but they might help identify the year:
- What is the color of the knob/handle on the lever that controls the driver-side cowl-vent?
- What color is the wiper knob?