2006 (S) Proof South Dakota State Quarter
Strike Type
Coin Details
Value Estimates
Values as of May 2026 — estimates reflect typical grades (G-4 through MS-67). Coins in lower or exceptional grades may fall outside this range.
Auction Record
$104 PR70 01-08-2007 Heritage Auctions
Description
The 2006 (S) Proof South Dakota State Quarter is a proof quarter struck at the San Francisco Mint, part of the State Quarters 1999-2008 series. Total mintage reached 2.9 million. The obverse features George Washington facing left, based on a 1786 bust by Jean-Antoine Houdon, while the reverse displays unique designs representing each of the 50 U.S. states, released in the order of statehood ratification. Designed by John Flanagan/John Mercanti. Struck in 75% copper, 25% nickel, weighing 5.67 grams, 24.3 mm in diameter, with a reeded edge. Cataloged as PCGS #39136. The 50 State Quarters Program (1999-2008) was the most successful numismatic program in U.S. The program revitalized coin collecting in America. Key issues include the 2004-D Wisconsin "Extra Leaf" varieties and various proof/silver proof versions.
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