The Matchbox No. 12 Big Bull Bulldozer toy is a vintage piece from 1975, part of the Matchbox Superfast series. This diecast toy features a construction vehicle design, made from a combination of plastic and metal materials. The multi-coloured bulldozer is a collectible item that captures the nostalgia of toys from the 1970s, making it a valuable addition to any toy or diecast vehicle collection.