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    Five 1968-1990 'No S' NGC-Certified Proof Coins

    1968-1990 No S Five-Piece Proof Coin Set PR67-PR69 NGC. The set, in a five-coin NGC encapsulation, includes:

    1968 No S Dime PR67. Although proof coin sets in 1968 were the first struck at the San Francisco Mint after the 1858-1964 Philadelphia Mint proof sets and the hiatus provided by the 1965-67 SMS sets, the responsibility for making proof dies--with proper mintmark affixed-- was still the responsibility of Philadelphia. (Only in 1996 would the Denver Mint open its own die shop, ending the 200-year-old monopoly of the Philadelphia Mint as the sole supplier of coinage dies to the various branch mints.) At least one die escaped with no S mintmark, and a small number of S-less proof dimes were struck before the error was detected and the die removed from service. Today this coin is one of 20 No S pieces certified at NGC and PCGS combined, the finest a handful of PR68 Cameo pieces (6/08). Extremely rare; this piece has radiant silver-white surfaces with nary a flaw visible.

    1970 No S Dime PR68. Perhaps 2,200 examples of the 1970 No S dime were produced before the error was discovered. Today several hundred examples are certified at NGC and PCGS combined. This piece offers premium appeal and extremely clean, lustrous surfaces, although there is little field-device contrast.

    1971 No S Nickel PR69 Cameo. Another diemaking error attributable (as all coins here) to the Philadelphia Mint, which until 1996 was still responsible for adding mintmarks to dies--proof and otherwise. This Jefferson nickel error issue, to the delight of the legions of collectors of this popular series, was produced to the extent of 1,655 coins or thereabouts, according to the Mint estimate provided at the time. This example offers wonderful black-and-white field-device contrast, with full steps as always on modern proofs and thick frost on the devices. Tied with four others certified at NGC in PR69 Cameo, and there are two PR69 Ultra Cameos.

    1983 No S Dime PR67 Ultra Cameo. This "missing mintmark mishap" was produced to an unknown extent, as the Mint failed to produce an estimate. Since the life of a proof die is 3,000 to 3,500 pieces, however, that figure provides an upper bound for the number of extant coins. Several dozen pieces are certified, including quite a few in PR69 Ultra Cameo at NGC. This piece shows a tiny lintmark in the obverse field before Roosevelt's nose that perhaps limited an even finer grade. The surfaces elsewhere are near-impeccable.

    1990 No S Cent PR67 Red Ultra Cameo. The last member of this wonderful set is a certified Red Ultra Cameo Superb Gem Lincoln. About 3,500 of the pieces were produced, some of which turned up in the purple-packaged Prestige Sets of the year. This piece offers marvelous orange-red surfaces with a couple of microscopic toning flecks. As of (6/08) there are only 20 examples graded finer at NGC, in PR68 or PR69 Red Ultra Cameo.

    This is an important opportunity to acquire what was obviously a labor of love for some collector. The 1968 No S dime in particular is among the most important "missing mintmark" errors in modern proof coinage, and an extremely rare variety seldom seen in any condition. Do not hesitate on this remarkable set.

    Learn more at the Newman Numismatic Portal at Washington University in St. Louis.

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    Auction Dates
    Jul-Aug, 2008
    30th-3rd Wednesday-Sunday
    Bids + Registered Phone Bidders: 18
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