A mailed envelope showing two of the very early stamps printed right after Islamic revolution (12 February  of 1979).  One is for Nowruz 1979 (1358) and the other is depicting tulips of the spring of revolution.  The third stamp is from before revolution showing the emblem of lion and sun which were added to Persian flag from Safavid time till end of Pahlavi's era, which was still in use before and at the early days of revolution.