The design features a rectangular sign with rounded corners, displaying the text "PLATFORM 9 3/4" in a classic serif font. The text is centered within the sign, and the overall design has a vintage, nostalgic feel. The sign appears to be made of a sturdy material, possibly metal or wood, and is designed to be mounted on a wall or a post. The simplicity of the design and the clear, legible text make it a functional and visually appealing element, likely intended to guide people to a specific platform or location.