Warren Buffett Signed 1957 Silver Certificate Currency Rare PSA/DNA Slabbed. The item "Warren Buffett Signed 1957 Silver Certificate Currency Rare PSA/DNA Slabbed" is in sale since Saturday, September 5, 2020. This item is in the category "Collectibles\Autographs\Historical". The seller is "sunrisetown" and is located in Jersey City, New Jersey. This item can be shipped worldwide.