I'm not sure why some motorcycle plates have horizontal suffixes and others have horizontal ones. I've only spotted the vertical suffix on ML plates so far.

Missing: [MJ] [MN]

Note:The State of Alaska is no longer issuing license plates devoted solely to motorcycles.
Plates issued to motorcycles are now the same as the "R" series trailer plates.

There are now also personalized Veteran plates available:

For more information, see the personalized Veteran plates page.

The House of Harley-Davidson in Anchorage, Alaska.