James Arness in Gunsmoke- Marshal Badge

Gunsmoke U.S. Marshal Badge story in the box:

James Arness was born May 26, 1923 in Minneapolis, Minnesota. He earned a Purple Heart during World War II when his right leg was peppered with bullets in the battle of Anzio. In 1955, John Wayne recommended Arness for the lead role in Gunsmoke. It was one of the earliest “adult westerns,” centering around the exploits of Marshall Matt Dillon in the frontier town of Dodge City, Kansas in 1873.

We manufacture our Old West replica badges out of brass and steel.  They are double-stamped then silver plated.   Next, each badge is individually hand finished for a unique antique look. 

FREE with every badge: an old-fashioned style Kraft box with a story about the badge inside the lid.

Size: approx. 2 3/4" H

*Picture of actor is not included.

What is double-stamped brass?
Why brass instead of pewter?