System of measurement The same is true of quarts, gallons, etc. Six US gallons are a little less than five imperial gallons. The Avoirdupois system served as the general system of mass and weight. In addition to this there are the Troy and the Apothecaries' systems. Troy weight was customarily used for precious metals, black powder and gemstones. The troy ounce is the only unit of the system in current use; it is used for precious metals. Although the troy ounce is larger than its Avoirdupois equivalent, the pound is smaller. The obsolete troy pound was divided into 12 ounces, rather than the
Texas Precious Metals Texas Silver Round is 39.6mm in diameter and 3.3mm thick, slightly smaller in diameter and thicker than the American Silver Eagle. MINTAGES:<br> 2013 Texas Silver Round (Cowboy Reverse): 540,000 <br> 2014 Texas Silver Round (Longhorn Reverse): 600,000<br> 2015 Texas Silver Round (White tail Reverse): 400,000<br> 2016 Texas Silver Round (Coyote Reverse): Undisclosed<br> 2017 Texas Silver Round (Bobcat Reverse): Undisclosed Through Kaspar Manufacturing, Texas Precious Metals produces “monster boxes” and “mini monster boxes” for silver rounds made of durable cold-rolled steel. A monster box is an industry standard shipping unit for silver containing 500 coins or rounds and is usually made