Yup, this palm is the real thing.
At one time, they used to ship them in a flattened form and , to get them to fit comfortably, you soak it in water for an hour or so, then it will easily conform to your hand shape. The downside, is that you have to keep it on the hand awhiles,, til it starts drying out and re-hardening.
Nice find, I have one quite like it, from 1943.
Ceeg