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| 正面描述 | A dynamic allegorical figure of a winged youth, arms raised skyward, dominates the central field, set against a backdrop evoking celestial exploration with depictions of Saturn, stars, and the Moon. To the right, a highly detailed hot-air balloon appears in relief, its ornate gondola and envelope finely rendered. Technical and navigational diagrams, including compass markings and graduated scales, are engraved along the left portion of the field. The denomination '20 EURO' is inscribed in bold characters at the lower centre, with the date '2019' along the lower rim. The legend 'REPUBLIK ÖSTERREICH' arcs across the upper field. |
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| 背面铭文 | 登录 以查看详情 |
| 边缘 | Reeded |
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| 附加信息 |
Part of Austria's long-running "Faszination Licht" (Fascination of Light) series, this issue explores the physics of bioluminescence — specifically the enzymatic reaction between luciferin and luciferase that produces cold light in organisms from fireflies to deep-sea anglerfish. The series as a whole has drawn serious collector attention for pairing genuine scientific content with some of the more technically ambitious relief work produced by the Vienna mint in recent decades.
The .925 sterling specification, rather than the fine silver more common in modern commemoratives, was a deliberate series-wide choice to support sharper die detail retention across multiple strikes.