A 3D model of a steampunk-themed Ace of Spades poker card made of metal, such as brass or copper. The card has intricate engravings or embossments of steampunk structures like gears, clockwork, and pipes. The overall color is a mix of dark and bright blue, perhaps achieved through patina or enamel. The spade symbol and the letter 'A' are prominently featured in the design. The metal should have a realistic texture with appropriate reflections and possibly some wear or tarnish for authenticity.