Silver dollar coins once filled American cash registers, and some still survive in coin collections and change jars. The rarest silver dollars are worth much more.
Decade-old ones can fetch hundreds of thousands. Knowing how to value silver dollars is key.
Today's dollar coins don't contain silver, but your grandad's secret cache may contain a few amid the stray tobacco leaves, pocket lint, and takeout menus.
Find any of the most precious silver dollars and you could fulfill your grandad's goal of winning the lotto with his coin collection.