I believe this is a Canadian 1965 like I had posted before struck on a split planchet after doing some research that's all I got the reason why I say this if you look closely you can see the lines going through the coin but they're over the Maple Leaves on the reverse if it was damaged coin they'd be under the maple leaf on the coin the lines are over it in the front of the coin is weekly struck maybe some damage too but that's probably how it started
You tube is not your friend. It is filled with a lot of ridiculous folks who haven't a clue what they are talking about. Here is a link to split planchets. And the most reliable source we have. Maybe you can look thru them and tell us why you think it is still in the maybe pile. https://www.error-ref.com/?s=+split+planchet
This is an example of a split flan. In this case, it appears that a bubble of air was trapped in the metal sheet when rolled. When the blank was cut out it encroached on the void, leaving a structurally weak blank which then disintegrated with time, though did have sufficient structural integrity to survive the strike. You can see the darkened area on both pieces corresponding to the oxidised metal surfaces of the trapped volume.
