![COLOMBIAN PRIVATE EXPRESS COMPANIES - 1931 - COMPANIA DE TRANSPORTES TERRESTRES: 5c brownish red 'Compania de Transportes Terrestres' EXPRESS issue, small type showing bus & monument. A fine unmounted mint corner marginal block of four. (Hurt & Williams # S21) (COL/34421)](http://latinamericanphilatelics.com/cdn/shop/products/COL34421_{width}x.jpg?v=1612974687)
5c brownish red 'Compania de Transportes Terrestres' EXPRESS issue, small type showing bus & monument. A fine unmounted mint corner marginal block of four. (Hurt & Williams # S21)
5c brownish red 'Compania de Transportes Terrestres' EXPRESS issue, small type showing bus & monument. A fine unmounted mint corner marginal block of four. (Hurt & Williams # S21)