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| ULTRARARE 1955 FLAT PACK SILVER PROOF SET UNOPENED WOW! | $ 9.94 |
| 1955 U.S. PROOF SET - FLAT PACK | $ 119.00 |
| 1956 UNOPENED FLAT PACK SILVER PROOF SET US COINS~NoRes | $ 50.99 |
| 1963 UNOPENED PROOF SET FLAT PACK US COIN COINS | $ 0.01 |
| 1964 Unopened Flat Pack Proof Set US Silver Coin Coins | $ 0.01 |
| 1961 Flat Pack Silver Proof Set US Coins *Mint & Packag | $ 9.99 |
| 1962 UNOPENED SILVER PROOF SET FLAT PACK US COIN COINS | $ 0.01 |
| 1958 FLAT PACK PROOF SET - UNOPENED | $ 9.99 |
| 1956 FLAT PACK PROOF SET | $ 9.99 |
| 1955 FLAT PACK PROOF SET | $ 20.39 |
| 1963 US Silver Proof Set Flat Pack No Resv | $ 15.00 |
| 1970 FLAT PACK SILVER PROOF SET~Government Package~NR | $ 0.99 |
| 1961 UNOPENED SILVER PROOF SET FLAT PACK US COIN COINS | $ 0.01 |
| 1962 FLAT PACK PHILADELPHIA PROOF SET | $ 0.99 |
| 1963 UNOPENED PROOF SET FLAT PACK US COIN COINS | $ 0.01 |
| 1964 Unopened Flat Pack Proof Set US Silver Coin Coins | $ 0.01 |
| 1962 UNOPENED SILVER PROOF SET FLAT PACK US COIN COINS | $ 8.19 |
| 1963 US Unopened Silver Proof Set Flat Pack No Resv | $ 16.00 |
| 1962 US Silver Proof Set Flat Pack No Resv | $ 13.00 |
| 1960 FLAT PACK SILVER PROOF SET~Government Package~NR | $ 0.99 |
| 1955US PROOF SET "FLAT PACK" ORIGINAL IN MINT ENVELOPE | $ 36.00 |
| 1961 UNOPENED SILVER PROOF SET FLAT PACK US COIN COINS | $ 10.50 |
| 1955 U.S. Proof Set - Flat Pack Unopened Mint Sealed! | $ 50.99 |
| 1963 UNOPENED PROOF SET FLAT PACK US COIN COINS | $ 0.01 |
| 1964 Unopened Flat Pack Proof Set US Silver Coin Coins | $ 0.01 |
| 1962 UNOPENED SILVER PROOF SET FLAT PACK US COIN COINS | $ 5.50 |
| 1955 Proof Set - UNOPENED FLAT PACK CELLOPHANE | $ 135.00 |
| 1955 Flat Pack Proof Set - Original and Very Nice | $ 33.00 |
| rare unopened 1955 flat pack silver proof set | $ 127.00 |
| 1963 UNOPENED FLAT PACK SILVER PROOF SET US COINS~NoRes | $ 2.47 |
| 1961 UNOPENED SILVER PROOF SET FLAT PACK US COIN COINS | $ 8.19 |
| 1957 U. S. PROOF SET 'FLAT PACK' | $ 5.50 |
| 1959 U. S. PROOF SET 'FLAT PACK' | $ 6.50 |
| 1963 UNOPENED PROOF SET FLAT PACK US COIN COINS | $ 0.01 |
| 1964 Unopened Flat Pack Proof Set US Silver Coin Coins | $ 0.15 |
| 1956 Flat Pack Silver Proof Set US Coins *Mint & Packag | $ 49.99 |
| 1962 UNOPENED SILVER PROOF SET FLAT PACK US COIN COINS | $ 13.00 |
| 1961 US Silver Proof Set Flat Pack No Resv | $ 14.00 |
| 1955 US Mint Proof Set Soft Flat Pack Original Packing | $ 73.38 |
| 1961 UNOPENED SILVER PROOF SET FLAT PACK US COIN COINS | $ 14.00 |
| 1955 U.S. Flat Pack Proof Set in Original Packaging | $ 138.00 |
| 1963 UNOPENED PROOF SET FLAT PACK US COIN COINS | $ 12.40 |
| 1964 Unopened Flat Pack Proof Set US Silver Coin Coins | $ 12.40 |
| 1960 UNOPENED 5 COIN FLAT PACK SILVER PROOF SET | $ 9.99 |
| 1959 UNOPENED 5 COIN FLAT PACK SILVER PROOF SET | $ 9.99 |
| 1962 UNOPENED SILVER PROOF SET FLAT PACK US COIN COINS | $ 15.50 |
| 1959 Silver Proof Set in original flat pack | $ 29.99 |
| VERY RARE 1956 PROOF-SET FLAT ENV CHOICE ITEM | $ 34.60 |
| RARE UNOPENED 1960 PROOF-SET FLAT ENV UNSEEN 47 YEARS | $ 12.05 |
| 1955 SILVER PROOF SET Original UNOPENED Flat Pack | $ 90.00 |
| 1961 UNOPENED SILVER PROOF SET FLAT PACK US COIN COINS | $ 13.50 |