Today I just got my scale back from my friend who had if for the last two weeks. I always like checking to make sure my scale isn't broken and is calibrated correctly. So I took out a nickle and set it on the scale and it read 4.93 grams and I was about to call my friend to buy me a new scale. Then I thought I may be the nickle and found something interesting out. The newer nickle's weight was 5.00 grams on the dot, while older nicklers vary in their weight. I think it is because of all the use in the nickle's history what make is a few 100th's of a gram short, but I'm not sure. Has anyone else ever notice this? Nickle from 2000. Nickle from 2006.