3D Model: "Ultra-realistic 3D Model Of A Traditional American Mailbox Mounted On A Wooden Or Metal Post. The Mailbox Is Made Of Curved Galvanized Steel, Painted In Matte Black Or Silver, With Visible Rivets, Scratches, And A Functional Red Flag On The Side. Include A Small Embossed Address Number And A Slightly Weathered Texture With Subtle Rust Or Chipped Paint. The Door Should Be Slightly Open Or Closed With Latch Detail. Optional Environment: Grass Patch Or Concrete Sidewalk Base. PBR Materials, 4K Or 8K Textures, Clean Topology. Export In GLB, FBX Or OBJ Format."