An early Britannia metal variant formulated historically for making cast tableware and decorative goods. The high antimony content made it cast cleanly into intricate molds while resisting tarnish better than standard pewter. It was heavily used as a cheap, bright substitute for silver before electroplating became common.
Heard on the job
These antique candlesticks look like silver, but the duller ring and casting marks suggest they're Tutania.