Interesting 1851 Crystal Palace Medal with Counterstruck Letter 'M' #1413
A quite nice example of a souvenir medal struck at the first ever world's fair in London in 1851. The piece shows very little wear at all but depending on your taste, it comes with the bagage or the bonus of the counterstrike. I'm afraid I have no idea what the 'M' is for but it very much looks contemporary to the world's first world's fair. Very affordably priced.