This USB microscope is excellent for taking a close look at your coins. I’ve seen these selling for upwards of $200 at coin shows, but you can get one from Brando for only $75.
It magnifies anything from 10x all the way to 200x. Features include enabling you to “capture” either a photograph, or video with a simple click, capability of interfacing to PC, adjustable focus, quick and easy installation, and stylish design.
You can download the software from here and you can buy an excellent stand for the microscope here for $39.