I'm the owner of the original 1872 A/V 25 cents that was in Canadian Coin News. I had originally posted it on another site because of the double N and incidentally, the A Next to it is also doubled, which proves there was double punching of the A's.
Zonad noticed that there seemed to be something up with the V. Here are photos of that coin; note that there is definitely doubling on the right of the V and at the point. I do not think it is a die crack - very strange place for a die crack. I think it was caused by damage to the die when the A punch dug into what would be the solid raised area in the middle of the V.

