just a note...forgot to mention for khj- there is no denomination shown on the stamps because they are fund raisers for the Philippine Red Cross, see the Red Cross sign at the upper right hand corner with the two horizontal bars
I dont know the actual specifics, it changes depending on the mail cost and is a percentage of the total value of stamps you stick on an envelope to mail. Thus one mailed letter envelope= gets one Red Cross stamp glued to it
