1987 Huffy Sigma (girls model)
I found this bike on the curb in the trash in NY...the whole bike was spray painted silver. After many hours of paint thinner and rags, It came out like this. Nothing special, but pretty rare find...I had silver hands for weeks!
If your talking about the license plates for cars, then yes you can. As long as it's not offensive or someone else has it! I think there is a limit on the amount of letters, too...