▁devoted ▁to ▁the ▁h ob by ▁of ▁collect ing ▁post marks . ▁ ▁One ▁of ▁those ▁clubs ▁is ▁the ▁Post ▁Mark ▁Collect or ' s ▁Club , ▁founded ▁in ▁ 1 9 4 6 ▁and ▁based ▁in ▁the ▁USA . ▁ ▁Another ▁is ▁the ▁British ▁Post mark ▁Society , ▁founded ▁in ▁ 1 9 5 8 . ▁ ▁See ▁also ▁▁ ▁Ind icia ▁( ph il ately ) ▁ ▁Post al ▁mark ing ▁ ▁Post al ▁history ▁ ▁References ▁ ▁External ▁links ▁▁▁ ▁An onymous ▁Post mark ▁Mail er ▁ ▁British ▁Post mark ▁database ▁ ▁World ▁post mark ▁primer : ▁how ▁to ▁de ci pher ▁dates ▁ ▁Geographic ▁North ▁P ole ▁Post mark ▁ ▁A ▁Myst ery ▁Post mark ▁ ▁London ▁ 2 0 1 2 ▁- ▁New ▁post mark ▁k icks ▁off ▁ 2 0 1 2 ▁day ▁in ▁London ▁( back ing ▁London ' s ▁bid ▁to ▁host ▁ 2 0 1 2 ▁Olympics ) ▁ ▁Special ty ▁Hol iday ▁Post marks ▁Of fer ed ▁by ▁the ▁United ▁States ▁Post al ▁Service ▁ ▁November ▁ 1 7 , ▁ 2 0 1 1 , ▁Post al ▁Bul letin ▁ 2 2 3 2 4 ▁Phil ately ▁P ict orial ▁Post marks ▁Ann oun cement ▁ ▁Museum ▁ ▁Post ▁Mark ▁Museum ▁and ▁Research ▁Library ▁ ▁Pre can c els ▁ ▁The ▁ABC s ▁of ▁Pre cancel ▁collect ing ▁ ▁Club s ▁ ▁Post ▁Mark ▁Collect ors ▁Club ▁ ▁Bull se ye ▁Can cel ▁Collect ors ▁Club ▁ ▁British ▁Post mark ▁Society ▁