A fine Colombia Registered envelope sent 10 May 1928 Medellin to Boston. USA. via New York. franked 12c – 4c ‘Panamerican’ postage and 8c registration (1 x 8c and 1 x 4c) with UK type registration label (Type P 10×13). first used in Colombia late 1925. Letter is from stamp dealer Pedro Gonzales.Scarce usage. Ex Brian Moorhouse.