This classic 15-sen blue stamp from Republik Indonesia features a striking profile of a steamship cutting through open waters—an emblem of the young nation’s maritime identity and post-independence economic ambition. Issued in the early 1950s, this design appears in Indonesia’s definitive series highlighting transport and national infrastructure. Printed in deep monochrome blue, it showcases fine shading, detailed funnels, and strong contrast typical of the era’s local printings. A desirable item for collectors of Indonesian post-independence issues, ship-themed stamps, and Southeast Asian postal history.