Posted 10/28/2021 6:28 pm
It looks like a crack of some kind, but I've never seen one like it. Every die crack I've seen on older Canadian coinage start at a specific section in the design that has a sharp change of direction, That is usually from a denticle, a bead, a serif on a number or letter, or something in the portrait or reverse design where there is a sudden change of direction. That creates a tremendous stress point during striking so the metal will crack ... too much force on a small sliver/section of the die.. Your inset goes from smooth to smooth, so I don't understand, unless it didn't happen during the strike, but rather when the 2 components were combined and didn't quite match. It's a keepr since no one else on here has shown one.
Very interesting, since the core and the ring are two different pieces of metal is it a possible planchette flaw on the core? Its hard to tell from the photos, maybe a possible lamination issue specifically effecting the core? If the core and ring are two separate pieces then if it was a die crack would it be a retained broken planchette? Don't know enough about coins with different metal competitions I have never looked into toonies much. 
