I found these a while back sold sealed. I was not sure what they were, but I didn't have them so for sure I had to buy them. It was actually a lot of 2 packages. One was totally sealed. The other one had the plastic opened. I figured I could keep one sealed and open the one that was already partly opened. I had asked the seller about them because the package shows 2 post card styles, a different one on each side. I wondered if it was 4 of each type. The seller believe that that was . I was happy with that either way. When I opened the package it turned out to be 4 different types of post cards. Two of each kind. That was such a nice surprise. Each card has a different serial number on the backs of the different style card. I took a picture of just one back side of these , as they are all the same except for the last digit of the serial number. These are a whoot! By MUVA Netherlands for AGC. Not dated.