Louis Pasteur (1822–1895) was a French chemist and microbiologist renowned for his discoveries of the principles of vaccination, microbial fermentation and pasteurization. He is remembered for his remarkable breakthroughs in the causes and preventions of diseases, and his discoveries have saved countless lives ever since. He reduced mortality from puerperal fever, and created the first vaccines for rabies and anthrax. His medical discoveries provided direct support for the germ theory of disease and its application in clinical medicine. He is best known to the general public for his invention of the technique of treating milk and wine to stop bacterial contamination, a process now called pasteurization. He is regarded as one of the three main founders of bacteriology, together with Ferdinand Cohn and Robert Koch, and is popularly known as the "father of microbiology".

This coin was honored with the 40th Coin of the Year Award (COTY) for its exceptional historical significance. The COTY program, initiated and held annually by Krause Publications, is aimed at recognizing achievements within the coin-producing industry. Awards are bestowed upon coins that demonstrate outstanding numismatic design, artistic creativity, and exceptional craftsmanship. An international panel of judges selects these coins from those issued two years before the year of the award ceremony.


Depicts a portrait of Louis Pasteur on the right with a microscope and a microscope slide containing microorganisms – an allusion to pasteurization – on the left, surrounded by a quotation by Louis Pasteur "To cure sometimes, to relieve often, to comfort always". The scene is completed with crystals, evoking Pasteur's early crystallography work.

Mint mark of the Paris Mint (Monnaie de Paris in Pessac): Cornucopia (horn of plenty)

Privy mark of the General Engraver of the Paris Mint: Two nested squares superimposed on a rhinoceros head (Joaquin Jimenez)

1822 · 1895
"Guérir parfois, Soulager souvent, Écouter toujours"
200 ans


Depicts a face value between two branches of laurel and oak, surrounded by the country name and three hexagons.


Type Commemorative Issue (Non-circulating)
Material Silver
Fineness 0.333
Weight 17 g
Diameter 31 mm
Thickness -
Shape round
Alignment Medal
Paris Mint (A)

Related coins

110th Anniversary of Van Cleef & Arpels

French Excellence

Silver, 22.2 g, ⌀ 40 mm
Empress Joséphine

Women of France

Silver, 22.2 g, ⌀ 37 mm

2018 Football (Soccer) World Cup in Russia

Silver, 22.2 g, ⌀ 37 mm