Planes don't have license plates but they do have international registration numbers painted on the tail. This unique alphanumeric combination is never repeated. So I suppose, this is like a license plate.:p
Below is the current license plate for private vehicles---a combination of green-coded 6 alphanumeric symbols on a white background. On newer vehicles, the first letter usually indicates the region where vehicle is registered. The earliest license plates were introduced around 1912.
Posted for Photo Hunt