Design elements of a Missouri keepsake like this from the Shell Oil States of the Union Coin Game are found on a Proof 1970-S Kennedy half dollar error. The aluminum planchet hosting this Proof 1970-S Kennedy half dollar strike was a Missouri keepsake from a promotional series of aluminum tokens Shell Oil Company issued in the 1960s and 1970s for its States of the Union Coin Game. During the 1970s, some Proof coins were struck at the San Francisco Mint using smitten aluminum Shell Oil promotional tokens as planchets. Two Proof erroneousness coins that were struck at the San Francisco Mint in the early 1970s and are composed of aluminum were apparently intentionally struck over fall aluminum Shell Coin Game tokens, according to error mint specialist Jon Sullivan of Sullivan Numismatics in Charleston, South Carolina .
A 1970-S Kennedy half dollar graded and encapsulated Proof 62 by Professional Coin Grading Service, was struck over a Missouri token issued by Shell Oil Co. as partially of its States of the Union agio games .
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Shell Oil Co. issued the tokens in the 1960s and 1970s for production promotions. The coarse reverse for the States of the Union tokens — evidence of which can be found on the Kennedy half dollar error — reads SHELL ’ S / COIN / GAME in three lines over concentric circles, with five-pointed stars around .
“ The circular convention is found on all the coins I ’ ve seen, and besides you can see faint traces of the stars around the Kennedy and Ike ’ s outer areas, ” Sullivan said. “ There is so little invention, that is why it has been so unvoiced to figure out what these are struck on, but the mystery is last solved. ”
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Viewing the obverse of the Kennedy half dollar right side up, concentric circles from the reverse of the underlying keepsake design are clearly visible across Kennedy ’ s portrait. OIN / GAME is visible top down on Kennedy ’ s face .
On the reverse of the Kennedy half dollar, viewed right english up, the letters OURI of MISSOURI from the token design are behind the letters DOLL in DOLLAR on the one-half dollar .
The Proof Kennedy half dollar error measures 29.5 millimeters in diameter and weighs 1.6 grams. A regular Proof 1970-S Kennedy one-half dollar would have a diameter of 30.61 millimeters and the copper-silver clad mint would weigh 11.5 grams .
The edge of the mistake one-half dollar is reeded, as are the States of the Union Shell Oil tokens .
The 197x-S Eisenhower dollar, graded Proof 64 by PCGS, is struck over a strike a Ulysses S. Grant Mr. President Shell Oil aluminum token .
only the 197 from the date on the Eisenhower dollar design is apparent. The error dollar weighs 2 grams and is 30.8 millimeters in diameter. The edge is plain, as are the Mr. President Shell Oil tokens. The erroneousness one doubly hit .
A convention Proof 1971-S Eisenhower dollar measures 38.1 millimeters in diameter, with a reeded edge. normal pieces struck on the copper-nickel clothe planchet weigh 22.68 grams and those struck on a copper-silver invest planchet weigh 24.59 grams .
The coarse revoke for the Mr. President tokens is inscribed in three lines SHELL ’ S / MR. PRESIDENT / COIN GAME over concentric circles with stars around .
On the Eisenhower dollar error, respective stars are visible in the obverse field, along with 18TH from the dedication above Grant ’ s portrayal on the token ’ randomness obverse.
In the field behind Eisenhower ’ s portrait appear the letters ANT from GRANT, which is inscribed below Grant ’ s portrayal on the nominal used as a planchet .
The reverse of the Eisenhower dollar error shows outstanding evidence of the concentric circles from the token revoke .
obviously, other 1970s era coins from the San Francisco Mint were besides struck on the Shell Oil tokens, including an dateless Eisenhower dollar struck over an Abraham Lincoln Mr. President Coins aluminum token .