Yes there are antique plates however they are defined as,

"An "antique motor car" is any motor vehicle over twenty-five years old which is maintained solely for use in exhibitions, club activities, parades, and other functions of public interest. This includes test drives to prepare for such functions and transportation to and from repair facilities, and not used primarily for the transportation of passengers or goods over any way."

Which sounds like we can't occasionally drive to work or cruise around, use it for weekend fun/shopping etc. I don't know how strictly this in enforced by Mass police. I don't understand why they don't have more limited use/seasonal options available. I'm only planning on insuring it based on 5,000 mi per year.

Keith - how much do you drive yours up in NH?