1929, red surcharge with "Provisional" at 41 degree angle 50c on Colombia Air Post 10c green, horizontal pair, full OG, NH, VF, C.v. $250 as hinged singles

150.00

1929, red surcharge with "Provisional" at 41 degree angle 75c on Colombia Air Post 15c carmine, block of four, full OG, NH, VF, C.v. $900 as hinged singles

500.00