We do not have manga expertise necessary to give the full story behind these sets, but in this case, try “Genshin Impact Al Hessen”.  This set, and many to follow, is called “Share Postcards” and claims to contain 30 smaller stub cards, 30 attached postcards, and 1600 stickers.  The sets are unopened, still in their original Cello-wrap, and we can only refer to what the outer covers say.  However we did open one box, and it contained some sheets of impressively tiny stickers (about half the size of a little fingernail) and there could be 1600.  We did not count.  We do know they were produced in China; each set, including this one, is Grade: 1.  This description will be used for most of our entries following this one, until we say otherwise.