Like all of us have said. The 75 d is plated or covered in mercury to make it look like that. The nickel is interesting..... “extremely lucky to pull a under weight nickel to put on a scale to prove the scale is right”. I would keep that and put it in a 2x2 with the weight. The 75 d put it it in a 2x2 also and lie to all of you buddy’s you have A 75 d cent on a foreign planchette to show off....
75 is the year. They talk about '75 tests in other metals, thats all i know...we've all been waiting for the very first one to appear
How did you determine it isn't a rolled thin planchet? Minimum weight for a cent blank is 2.98 grams which would have a theoretical thickness of 1.176 mm. A 2.88 gram blank will be 1.141 mm. A difference of .035mm (or just over 1/1000 of an inch) I doubt you could see that difference if you were looking at the edges of the blank. Once it is run through the upsetting mill forget it, and after striking even more so. As I have said many times you can't judge the thickness of a struck coin by looking at the edge. The edge thickness is more a function of the strength of the strike than the thickness of the blank. This can be demonstrated by looking at a proof coin. The proof and business strike are both the same material, same weight, same diameter, same starting thickness of the blank, the only difference being the striking pressure. But the proof coin, struck at the higher pressure will appear thicker when viewed at the edge. Likewise a well struck thin planchet can be thicker at the edge than a less well struck normal planchet.