Bronze vs Spelter is one of the most common questions asked by antique collectors. Bronze is an alloy primarily consisting of copper and tin. It is dense, heavy and exceptionally durable, allowing sculptors to produce crisp detail and fine casting. Antique bronze develops a rich natural patina over time and remains one of the most desirable materials in decorative arts. Spelter, by contrast, is a zinc-based alloy introduced during the nineteenth century as a more affordable alternative to bronze. Although capable of producing attractive decorative objects, spelter is considerably lighter, more brittle and generally less valuable than genuine bronze. Collectors can often distinguish the two by weight, surface finish, casting quality and signs of wear. Bronze typically displays sharper detail and develops a warm brown or green patina, while spelter may reveal dull grey metal beneath worn finishes. Understanding the difference helps buyers accurately assess quality, authenticity and value.