This beautiful Nicaraguan surtax stamp features the vibrant Hexisia bidentata, a striking red flower native to Central America. Issued as part of the “Jardines Heller” (Heller Gardens) series, it highlights the country’s rich botanical diversity. Printed by the renowned Courvoisier S.A. of Switzerland, the design showcases fine color lithography typical of mid-20th-century floral issues. The “SOBRETASA POSTAL” inscription indicates it was a semi-postal stamp, with part of its value supporting public or postal causes. A prized item among collectors of Latin American flora themes.