A 19th- to early 20th-century hot air balloon: a realistic PBR model featuring a vintage wicker basket with intricate wood bindings, brass valves, and sandbag ballast. The canvas envelope shows a period-accurate cream and burgundy striped pattern, with high-resolution textures emphasizing weathered metal and faded fabric. Render under soft, warm sunlight with subtle shadows, on a transparent background for compositing. Target 10k–20k tris, clean AR-ready topology. Negative: no modern logos, no low-poly simplification, no cartoon proportions.