Retro Japanese Rocket Postage Stamp Sheet

A realistic fictional Japanese commemorative postage stamp sheet celebrating the history of space rocketry, presented as a collectible philatelic issue. - Composition & Layout: Square canvas, straight-on flat-lay view against a neutral beige background. One complete, pristine perforated sheet containing exactly 16 identical stamps arranged in a 4x4 grid, separated by crisp circular perforation holes and cream paper gutters. - Stamp Design: Each vertical rectangular stamp has a cream border and fine engraved dark linework. Inside each stamp is a dramatic 1950s–1970s retro science poster illustration depicting the chronological progression of Japanese rockets. At the bottom, plumes of smoke and warm orange launch glow; transitioning upward into a dark navy starry night sky with delicate orbital arcs and a small satellite in the upper left. Exactly six distinct rocket models stand upright or ascend, progressing from early small experimental rockets on the lower left to taller white-and-gold launch vehicles on the right, accented with tiny decorative year and name plaques. - Typography & Text: Running vertically down the left side of every stamp is Japanese text: "[日本のロケットの歴史]". Along the bottom border of each stamp, printed text reads: "[110 YEN] [NIPPON] [日本郵便]" with subtle lithographic ink imperfections. - Style & Color Palette: Authentic vintage Japanese stamp lithograph aesthetic, fine intaglio-style detailing, aged off-white cream paper texture, muted navy blue, sepia, warm gold, white, black, and fiery orange tones. - Constraints: Exactly 16 complete stamps in a 4x4 grid, no partial stamps cropped at the margins, no modern digital logos or watermarks, strictly illustrated artwork.