Small cover franked with two 2¢ Washingtons and an 8¢ Martha Washington stamp.  The postmark leads me to believe the cover didn't travel via 1st class mail.   The cover was probably placed on a stack of magazines or newspapers.  Twelve cents postage paid 12 times the 1¢ / 4oz 2nd class mail rate (for 48 ounces).  Second bureau second-class mail uses are quite challenging to find.