Indent strikes with partial brockages on Canadian 1c coins from 1980 to 1981 are pretty common. However, this one is so much not like the others.
Note the orientation of the brockage; normally coins that fail to eject to produce indent partial brockages have their beads/denticles and rim along inside edge of the indent.
I interpret this coin as being struck through a previously struck elliptical (football) coin.

