Mixed headstamps with all the same primers and the one on the right has marker across the head but not on the primer. Good eye; I didn't even think of that.That .455 ammo looks like it has been reloaded to me.
Have ammunition laws changed in the past few years? I don't know much about export or collecting so I don't know if something specific to those changed but for regular buying of ammo for shooting nothing has changed in a while.Unfortunately some of your laws over the past few years have significantly cut into the Canadian ammo collecting community. And as the field gets smaller, there's more interest in top condition boxes and rounds, the ones in the OP's pics not being in that class.