That brings up an interesting discussion that we had a few years ago regarding the '79 1st series sheets. It is widely believed that the endless supply of 1st series reprint sheets were intended to be used as premium inserts in Bond Bread. I think the theory also said that these sheets were printed sometime after the '79 series was sold in packs. So it would stand to reason that if someone could come up with a legitimate '79 1st series sheet that was not one of the Bond Bread sheets, it should be worth a lot more money. The trick is trying to distinguish the two.