||1906-S $20 MS64+ NGC. CAC. An incredible display of architectural engineering, the San Francisco Mint, also known as The Granite Lady, was not heavily damaged by the earthquake of April 1906, or by the devastating fire that followed, thanks in part to the use of two artesian wells within the building's enclosed courtyard. These wells were the only reliable source of water in the city to fight the fire since the quake had broken the water mains. With no loss of bullion, and minimal structural damage, double eagle production was not overly affected by these events, and more than 2 million coins were produced that year. The issue is easily obtainable in grades through MS64, but is decidedly rare finer. This sharp, Plus-graded piece boasts frosty golden luster and attractively smooth surfaces. NGC has seen only five numerically finer examples (8/14). Ex: Eric P. Newman Numismatic Education Society.
Realized $5140.63. Description courtesy of Heritage Auctions.