In regards to the 1884 and 1885 3c nickel coins, does anyone know how to tell the difference between a proof and a business strike? From what I understand, its the same dies that were used, just different machines. I have read the proofs have mirror rims. Take a look at the two 1884 3c coins at GC. Both look proof to me but one is graded AU58 and will sell for 1000's more than the proof. https://www.greatcollections.com/Coin/2058637/1884-Nickel-Three-Cent-Piece-PCGS-AU-58 https://www.greatcollections.com/Coin/2051031/1884-Nickel-Three-Cent-Piece-ICG-Proof-65