Found this in my Grandma's basement. (Germany) The number in the slit for the magazine says 11232.5yr ⋅ PublicAce ⋅ r/whatisthisthing
My School has made these posters to use the heaters responsibly, they did a pretty shitty job.7yr ⋅ PublicAce ⋅ r/CrappyDesign
