Thar's gold in them thar cans: One of the eight cans discovered by a California couple. They were stuffed with gold coins minted in the 1800s. The cache's estimated value: $10 million. Kagin's Inc./AP hide caption itoggle caption Kagin's Inc./AP The Two-Way What A Rush! California Couple Finds Gold Coins Worth $10M February 26, 2014 It's thought to be the richest cache of coins ever discovered in the U.S. Minted in the 1800s, they were stuffed into eight cans and buried on a Sierra Nevada ridge.