ACQUIRING AND COLLECTING 90% JUNK SILVER COINS? One of my favorite things in life is collecting coins and I love collecting the 90% silver junk coins. Since silver's demonetization, silver has been junk, not precious. So they call these 90 percent US silver coins as junks. Because they were so cheap. Silver Dime bag was few bugs before. People think silver as industrial metal. But it was not hundred year ago. Silver was monetary metal and subsidiary coins not junk silver coins.