Los 998
Provisionals blue Typewriter Surcharge: November 1920, "VALOR $0.10" in blue on 50c. pale green tied by two-line cancel "NAVEGACION AEREA NEIVA" and slightly faded oval cachet to cover to Bogota, used in combination with Colombia 1917 two singles ½c. yellow-ochre and single 2c. red, vertical fold affecting one stamp, otherwise a fine and appealing cover
