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50 Euro Baron Clemens von Pirquet
| Issuer | Austrian Mint (Münze Österreich) |
|---|---|
| Year | 2010 |
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| Weight | 10.14 g |
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| Obverse description | Right-facing bust of Baron Clemens von Pirquet rendered in high relief, depicting the physician in suit and collar with a distinctive moustache. To the left of the portrait, the caduceus symbol of medicine is shown in the field alongside the denomination '50 EURO' and the date '2010'. The legend 'CLEMENS VON PIRQUET 1874-1929' arcs along the upper rim, while 'REPUBLIK ÖSTERREICH' curves along the lower rim in bold incuse lettering. |
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| Obverse lettering | CLEMENS VON PIRQUET 1874-1929 50 EURO 2010 REPUBLIK ÖSTERREICH |
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| Additional information |
Clemens von Pirquet coined the word "Allergy" in 1906 — the term derived from the Greek *allos* (other) and *ergon* (reaction) — after his work on serum sickness and tuberculin responses established that the immune system could overreact to foreign substances. The Austrian physician also developed the Pirquet test for tuberculosis exposure, a skin-prick method that remained in widespread clinical use well into the twentieth century.
This coin is part of Austria's long-running "Doctors of Medicine" gold series, which consistently attracts collector interest beyond standard bullion buyers due to its subject specificity. The .986 fineness is slightly above the conventional .9999 or .900 used by most world mints for commemorative gold.