Cover with 'J. Unfried, Colonia Helvetia, San Carlos, Costa Rica' return address handstamp in purple on front franked with single 1892 10c green 'Arms' issue (SG 35) tied by 'Target' cancel and undated circular SAN CARLOS cancel in blue with fine strike of undated oval CORREOS DE SAN CARLOS COSTA RICA marking alongside also in blue. Addressed to GERMANY with SAN JOSE and USA transit and GERMAN arrival marks on front & reverse. Very scarce.