World War II German Postage Stamp - U-Boat (Semicentennial of Heligoland)

This is a 1943 postage stamp from the German Reich (Deutsches Reich), specifically the 3+2 Pfennig value from the 'Day of the Armed Forces' (Tag der Wehrmacht) set. The stamp features a monochromatic sepia-toned brown intaglio print on paper. The graphic illustration depicts a German U-boat (submarine) surfacing in a rough sea with a sinking ship and smoke in the background, symbolizing naval power. The text 'DEUTSCHES REICH' is clearly printed at the bottom in a bold, capitalized Fraktur-influenced typeface. The denomination '3 +2' is located in the upper right corner, indicating a 3-pfennig postage value plus a 2-pfennig surcharge for the National Culture Fund. The stamp appears to be 'used' or 'cancelled' as evidenced by the partial black postmark visible on the right edge. The serrated edges (perforations) appear mostly intact, though there is slight softening at the corners. The paper shows mild age-related toning, which is consistent with items from the mid-1940s. The designer's name 'G. KLEIN' and the engraver/printer marks are typically found at the very bottom margin, barely visible here. As a piece of wartime propaganda philately, it serves as a historical artifact of the Third Reich era.