The promos can be distinguished from the regular cards because of the addition of "Write for entire set of 63" on the bottom of the back. The regular cards issued only in complete set form, actually number 64. The slightly Oversized card is a bit centered and sharp with only 2 PSA 10's graded higher. According to an ad placed by Laughlin, only 300 of these sets were produced. We are unsure if that total would be higher or lower for the "Promo" versions.