I bought some 1oz silver eagles a while back and a few of them turned out to be fakes. In the image the fake is on the left. The main, easiest differences to spot are the design of the shield, and the finish is a lot coarser on the fake. The genuine item on the right has a lot more finer detail, easily visible in the feathers. It was late in the afternoon (in a rush) there were about 30 x 1oz coins, I did a spot test on them but missed the few fakes. Lesson learned If someone else is saved by these images then balance is restored!