I for some reason found a 1942 penny while metal detecting....for somereason I thought it was supposed to be steel (metal detecting in 100 degree heat in Mississippi must have melted my brain)...I went home all excited...stuck it to a magnet....it didn't stick...of course it didn't....Then I realised....and felt kinda stupid...but I got a rush for a little bit....everyone makes mistakes...its part of learning.