TURNING TO COLLECTIBLES THAT ARE ACTUALLY WORTH MONEY: 21 1930s comics found in insulation of house. Including Detective Comics #2 and New Comics #1, which (the article states) eventually became DC's semi-beloved Adventure Comics. I don't know if it was standard practice to insulate one's home with periodicals or not--so I wouldn't go tearing up your walls yet. I still believe there's a Honus Wagner rookie card buried in a coffee can somewhere waiting for me to find it.