5c red violet on smooth cream paper postal stationery lettercard (H&G A23a, outer perforations at sides removed) used with fine strike of CAYASTA (SANTA FE) cds in blue green dated 12 JUN 1911. Addressed to BUENOS AIRES with arrival cds on reverse. Cayasta was founded in 1867 as a Swiss, French & German colony created soon after the establishment of the Argentine Colonisation Commission.