Is it aluminum? Looks Aluminum. Don't see a reason why anyone would bother to make these into fake coins.
Neither Gadoury nor Le Franc has any notes about counterfeits of that coin, so I would guess it's authentic.
Scarce or rare dated aluminum coins have been counterfeited. I do have some scarce Chinese (Manchukuo) examples and needless to say, I have got stung by counterfeits. Does not hurt to be cautious.