This is a Rare 1973 BICENTENNIAL COMMEMORATIVE First Day Cover Posted Stamps & Medallion Coin of Samuel Adams & Patrick Henry which is Sealed in Plastic. The Post Mark is From Boston, MA. 1973. This was Put out by the United States Treasury in 1973. It is of the Subject: The Boston Tea Party & American Revolution Bicentennial 1776-1976. It Measures about 3 5/8" Wide x 6 1/4" Long. See Pictures as They are Part of the Description. This would Make a Great Gift or for Yourself.