Registered printed 'Consulado de la Republica de Polonia en Bogota, Colombia' cover franked with 1934 5c brown & 10c orange plus 1940 ½c carmine TAX issue (SG 459/460 & 523) tied by BOGOTA (REC) cds's dated 31 JUL 1939 with blank boxed Registration marking in red alongside. Addressed to RIO HACHA, DEP DE MAGDALENA with SANTA MARTA transit cds on front and small blue & white 'CORREOS DE COLOMBIA CORRESPONDENCIAS CERTIFICADAS' sawtooth official seal on revere tied by two further strikes of the BOGOTA cds with RIOHACHA arrival mark alongside. These seals were only in use for a short time. Uncommon.