Cover with typed 'A. Iglesias Aligandi, San Blas, Rep. of Panama' return address on front franked with 1942 5c light blue and 1950 1c black & deep blue TAX issue (SG 411 & 518) tied by light strike of AGENCIA DE CORREOS ALIGANDI cds dated NOV 2 1951. Aligandi is a small Island P.O. in the Indian reserve area of San Blas. Addressed to USA with transit marks on reverse. Scarce origination.