I am definitely not a toning expert at all. I recently bought an deal of mint sets that were without their original packaging. I picked out the nicely toned coins and sent them to NGC. I sent in 28 coins total from this lot. It included 6 nickels very similar to the one posted except some may have been toned on both sides. The silver coins graded very high. No coin less then 65 and 3 star's including an 1952 S half that 66 stared and an 1952 S Dime that 67 stared. I am positive that these coins all came from the same place and all experienced the same conditions so why do they bag the nickels as AT and grade the rest?? I thought that this green color was a very hard color to get AT'ing?