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There were more than 2,900 Austrian coins, many from 1915; 4,500 from Mexico; 500 from Britain; 300 U.S. gold pieces, some dating to 1880; and more than 100 U.S. gold pieces as old as the 1890s. They were stored mostly in 2-foot-by-2-foot-by-2.5-foot ammo boxes stacked on top of one another.

The variety of coins impressed Howard Herz, the appraiser of the fortune for the estate who has seen a lot as curator of gambling collections at Harvey’s Resort at Lake Tahoe from 1960 to 1993.

“It was an extraordinarily well-calculated investment in gold,” Mr. Herz said.