vintage bicycle 3d model

Create a highly detailed 3D model of a vintage 1950s bicycle with a strong retro aesthetic. The cycle should have a slim curved metal frame with a classic diamond or step-through design. Include thin tires with spoke wheels, slightly worn rubber texture, and realistic metallic rims. Add a comfortable leather seat with subtle aging and stitching details. The handlebars should be slightly curved with rubber grips and a classic bell attached. Include pedal system with chain and gear assembly, showing slight rust and wear for realism. The paint on the frame should appear slightly faded and scratched, giving an authentic antique look. Ensure clean topology, optimized poly count, and separate components for wheels, frame, and accessories. Render with soft lighting for a nostalgic vintage vibe.