Silver is superior to even copper in heat conductivity. In fact, silver is the metal with the best heat conductivity on the entire periodic table better than gold or platinum.
It creates a supremely even heated cooking surface, and provides a cook with very precise control over their desired results. Joseph heinrichs, a master metalsmith in new york city of prussian origin, made these saucepans surely with that in mind. While they haven't been made since the mid 1930's, these little saucepans are highly sought by professional chefs to this day. Heinrichs essentially fitted a silver pan within a bronze one and fixed it with a rolled edge at the rim. The bronze must be high copper as it has a reddish tint.
Knobs are bronze and handles are silver plated copper. Highly sophisticated and could not be made today.Antique, but look suitable to be pressed into service. Check out some of my other sterling silver here. Or just browse around the shop. This item is made of copper.