About this 3D model
"The silver piece is generally considered to be a coin, though ingots or trade bars made of silver or other materials may be worth multiple silver pieces or even fractions thereof. In coin form, it is generally described as “approximately the size and weight of a United States half-dollar coin” meaning 30.6mm in diameter and weighing 11.5 grams (approximately 40 to a pound). Pre-1965 US half dollar coins are made of 90% silver, 10% copper, which is a very reasonably accurate representation of the composition of good quality medieval European silver coins." - Dungeonsfandom.com