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| 正面描述 | The obverse depicts the Mariner 10 spacecraft in relief at center, shown with its extended solar panels and antenna, superimposed over a cratered planetary surface occupying the lower left field, with a smaller spherical body visible in the upper field and curved trajectory arcs in the background. The circumferential legend reads MARINER 1973 at top and VENUS - MERCURY at bottom, with the inscription FIRST MERCURY PHOTOS in the left field. Designer's initials SM appear in the lower center field. |
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| 背面文字 | Latin |
| 背面铭文 | CALIF. INSTITUTE OF TECHNOLOGY - JET PROPULSION LABORATORY THE CALTECH - JPL NUMISMATIC SOCIETY COMMEMORATES ACHIEVEMENTS IN SPACE EXPLO- RATION |
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