Are there decals, maybe on the rear of the blades? Any other legible numbers stamped around the hub? It certainly looks similar to one of the several models used on Curtiss F boats in the late teens, but you'd need the numbers to confirm that.
Also, yours is a left hand rotation, suggesting a pusher application rather than a tractor.
It is likely to be a prop made for an OX5 engine for the USN.
It is a product of the Lang prop company, where Dashwood Lang was imported from England in 1917 to advise the USN on how to mass produce wooden propellers using wood-working firms who had not previously made aircraft props; piano makers, cabinet makers, advertising board makers are some examples.
Your prop dates from late 1917 and was made in Canada.
Comment