Blue Extreme Rare

Hong Kong stamp 1921-37 SG129 in fresh U/M block of 4 extremely rare multiple

Hong Kong stamp 1921-37 SG129 in fresh U/M block of 4 extremely rare multiple
Hong Kong stamp 1921-37 SG129 in fresh U/M block of 4 extremely rare multiple
Hong Kong stamp 1921-37 SG129 in fresh U/M block of 4 extremely rare multiple

Hong Kong stamp 1921-37 SG129 in fresh U/M block of 4 extremely rare multiple

Fresh U/M block of 4.


Hong Kong stamp 1921-37 SG129 in fresh U/M block of 4 extremely rare multiple