1p 50c dull violet postal stationery envelope on poor quality paper with 'C' imprint above stamp (H&G B5, Paraguay Postal Stationery Catalogue #EN Unlisted, stamp set very high with different security printing & insignia inside) used with light strike of CAAZAPA cds. Addressed internally to CHARARA. A rare and so far unique item, unlisted in the Paraguay Postal Stationery Catalogue.