1977 United States Proof Set, 5 Coins Inside!!. The Treasury raised the price of the 1977-S Proof Sets to $9.00. Sales dropped to just over 3.2 million sets - was this because the Mint returned to the old stand-by designs for the Quarter, Half Dollar, and Dollar, or because of the increased price?Original packaging: The individual coins of the 1977-S Proof Set were sealed in a two-piece, clear plastic case. Raised rings of plastic separated the coins from each other, and a red, felt-covered paper insert was added for visual impact. The clear plastic case containing the coins was inserted into a molded, black plastic frame with the raised silver letters "UNITED STATES PROOF SET", and a hinged flap that could be flipped over for display purposes. A black card cover imprinted with silver letters, "United States Proof Set • 1977" protected both the case and the frame.Each set contained six coins: One example each of the Lincoln Cent, Jefferson Nickel, Roosevelt Dime, Washington Quarter, Kennedy Half Dollar, and Eisenhower Dollar.About the sets: 1977-S Proof Coins are found with Brilliant, Cameo, and Deep Cameo surfaces.