Airmail cover franked with 1940 1p green and 1944 10c green, 15c blue & 2 x 50c sepia (SG 545 & 591/593) all tied by CORREOS COLONIA FERNHEIM cds's. Addressed to SWITZERLAND with AEREOPOSTAL PARAGUAY transit cds on reverse and Swiss arrival cds on front. Small corner fault away from stamps. Colonia Fernheim was a Russian mennonite settlement founded in 1930.