These quarters were minted in San Francisco and contain 40% silver. They are valued higher than the regular clad versions due to their silver content and limited mintage. Prices for these can range from around $1,000 to $5,000 depending on their condition.
This is an error variety where the quarter was minted in San Francisco but lacks the mint mark 'S'. Such errors are highly sought after by collectors, and prices can range from $1,000 to $5,000 or more depending on condition and rarity.
This is a mint error where a quarter meant to be struck on a copper-nickel clad planchet was struck on a 40% silver planchet instead. Such errors are extremely rare and can fetch prices upwards of $1 million, depending on the condition and demand.
Double die varieties occur when there is a misalignment during the minting process, resulting in doubled images or inscriptions on the coin. Depending on the severity and visibility of the doubling, prices for such coins can range from a few hundred dollars to several thousand dollars.
This is another mint error where a quarter intended to be struck on a copper-nickel clad planchet was struck on a nickel planchet instead. These are extremely rare and can fetch prices in the range of $1 million to $5 million or even higher depending on the condition and demand from collectors.