A finely engraved 15-groszy stamp issued by Poczta Polska, promoting the post-war expansion of the Gdańsk Shipyard. The design shows a large vessel under construction, surrounded by scaffolding and cranes, symbolizing Poland’s industrial rebuilding efforts. Rendered in a deep red-brown, the artwork by B. Świderska (design) and E. Konecki (engraving) showcases strong linear detail characteristic of early 1950s Polish industrial-themed issues. A clean example suitable for both thematic shipbuilding collections and post-war reconstruction topics.