I found my Mint Sets box, and they are all indeed sealed. Now they spent most of the last 45 Years in Wash. DC area,
and it is plenty Hot & Humid there, so probably as mentioned above the environment caused the glue to activate.
I'm not going to open any of them for the time being.
and it is plenty Hot & Humid there, so probably as mentioned above the environment caused the glue to activate.
I'm not going to open any of them for the time being.




















