I’ve recently unpacked my own childhoods Lego, and most pieces are like new even after 40 years. Some white pieces are a bit yellow, but it’s inconsistent, so I

I’ve recently unpacked my own childhoods Lego, and most pieces are like new even after 40 years. Some white pieces are a bit yellow, but it’s inconsistent, so I suspect that happened by laying in the sun before it all was packed away. The battery boxes seems to have become a bit brittle. The lego has been stored in cardboard boxes first in the attic in my parents house, and after that in miscellaneous cellars and then an attic again.