This distinctive triangular airmail stamp was issued by Croatia (Independent State of Croatia – NDH) during World War II. Featuring a beautifully illustrated bird in flight, the design symbolizes speed, freedom, and the spirit of early aviation mail services. The inscription “Avionska Posta” confirms its use for airmail correspondence. The uncommon triangular format adds strong visual appeal and makes it a standout piece in any collection. Issued in a 60 Banica denomination, it reflects the postal history of a turbulent wartime period. A desirable item for collectors of WWII-era Europe, airmail stamps, and unusual stamp shapes.