
20c red brown on blue 'Registration' issue of Colombia with 'First Colon' overprint in magenta, a fine used copy with manuscript '3920' registration number. Four margins, small thin but scarce. (SG R79B)
20c red brown on blue 'Registration' issue of Colombia with 'First Colon' overprint in magenta, a fine used copy with manuscript '3920' registration number. Four margins, small thin but scarce. (SG R79B)