
I don't know squat about VAMs but the line across your coin might not be a die break. It it's a lamination it counts as a mint error but probably won't be as desirable as a major die break.
Another possibility is post-mint damage. Coins have been posted on CCF which had been cut with a sharp tool and the displaced metal was subsequently worn down, leaving a raised ridge that resembled a die crack.
I'll be interested in what other CCF members have to say.