A classic early Austrian Postage Due (Nachporto/Porto) stamp featuring the bold central numeral “3” framed by ornate typographic scrollwork and geometric borders. Printed in a rich blue shade, this design belongs to Austria’s iconic early 20th-century due series used to collect underpaid mail charges. The strong engraved style and decorative lettering give it excellent visual appeal for traditional European collections. Widely collected for its clean numeral design and postal-history relevance, it fits perfectly into Austria, postage due, and back-of-the-book albums. A solid foundational piece for classic Austrian specialists.