2006-S San Francisco Old Mint Modern Commem Dollar $1 Graded GEM++ Proof Deep Cameo By USCG. The 2006 Old San Francisco Mint Silver Dollar was issued to mark the centennial of the building's survival of the 1906 earthquake and fire. The so-called "Granite Lady" was also viewed as instrumental in helping the city recover following the disaster. The Reverse is especially significant to Morgan Dollar Collector's as it is a copy of the Morgan Dollar Reverse. Encapsulated and graded PR70 DCAM by USCG. Estimated Value $250