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| 表面の説明 | At center, the national coat of arms of the Democratic Republic of the Congo is prominently displayed within the field. The circular legend reads REPUBLIQUE DEMOCRATIQUE DU CONGO with the motto JUSTICE PAIX TRAVAIL. The denomination 20 FRANCS, the fineness mark 999.9, the silver weight designation 1 oz Ag, and the year of issue 2020 appear within the field. |
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| 表面の文字体系 | ログイン して詳細を見る |
| 表面の銘文 | ログイン して詳細を見る |
| 裏面の説明 | The reverse depicts two Mamenchisaurus dinosaurs in a naturalistic prehistoric landscape. One sauropod is shown with its elongated neck lowered to drink from a body of water in the foreground, while the second stands upright behind it. A mountain range forms the background horizon, and a large pterosaur is depicted in flight overhead. The legend PREHISTORIC LIFE MAMENCHISAURUS and the date range 160-145 MIO YEARS BC appear prominently, accompanied by a geological timescale referencing the Triassic (250-200 MIO. YEARS BC), Jurassic (200-145 MIO. YEARS BC), and Cretaceous (145-66 MIO. YEARS BC) periods, with the year 2020 also inscribed. |
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| 縁 | ログイン して詳細を見る |
| 鋳造所 | ログイン して詳細を見る |
| 鋳造数 | ログイン して詳細を見る |
| 追加情報 |
The Mamenchisaurus is a sauropod genus known almost entirely from Chinese fossil sites, with some specimens preserving necks that account for more than half the animal's total body length — among the longest cervical proportions of any known vertebrate. The Democratic Republic of the Congo has issued a sustained run of natural history-themed silver pieces under its numismatic program, which operates essentially as a revenue-generating export product; circulation within the DRC itself is negligible.