This is more of a group of 12 and less an integrated set, because eight of the cards are numbered in sequence while the remaining four look a little different on the back.  But it is as we received it from the official distributor.  Anyway, all of the unused cards have pre-printed postage and are captioned in Korean only.  The scan shows the  paper cover (lower right) and three of the 12 cards, one of which (lower left) shows May Day Stadium.  Grade: 1