The numbers stamped on it look like Stewart Warner numbers, they made speedos for a lot of different cars over the decades. It's most likely from a car, I think
Gene, as Squirrel said Hudson and if I'm not mistaken they used them in the Essex as well. Any plans for it?
Yep. In a side-by-side comparison, it surely looks like a motorcycle speedo from a 33 Hudson. Jack E/NJ
Yes it was made by Stewart Warner. And they made instruments for motorcycles too. A lot of the same parts in car and bike instruments, just maybe calibrated differently. Actually they made speedos for bicycles too.