2005 AD., Germany, Centennial of Albert Einstein's Relativity Theory commemorative, Hamburg mint, 10 Euro, KM 238.

Bundesrepublik Deutschland, Gedenkmünze "100 Jahre Relativitätstheorie von Albert Einstein", Entwurf: Heinz Hoyer, Münzstätte: Hamburg (J), 2005 AD.,
10 Euro (32,5 mm / 17,93 g), 0.925 Silber, 0.075 Kupfer, 18,00 g theor. Prägegewicht, Auflage 2.100.000 Stück (davon 300.000 in Spiegelglanzausführung/proof), medal alignment ↑↑, lettered edge,
Obv.: BUNDESREPUBLIK / DEUTSCHLAND // 2005 10 EURO / J , Adler in Kreis, die zwölf Europasterne beiderseits, Wertangabe, Jahr und Münzzeichen darunter.
Rev.: ALBERT EINSTEIN / E = mc² / HH / 100 JAHRE / RELATIVITÄT / ATOME · QUANTEN , Darstellung einer Kugel, deren Masse Raum und Zeit krümmt mit der vertieften Aufschrift "E = mc²" - depiction of a sphere resting on a changed net (mass influencing space and time).
Edge: in vertiefter Prägung die Inschrift: "NICHT AUFHÖREN ZU FRAGEN"
Jäger 514 ; KM 238 .

Year / Mint Mark / Mintage
2005 J 1,800,000
2005 J 300,000 (proof issue)

Albert Einstein ( 14 March 1879 – 18 April 1955) was a German-born theoretical physicist who developed the general theory of relativity, effecting a revolution in physics. For this achievement, Einstein is often regarded as the father of modern physics and the most influential physicist of the 20th century. While best known for his mass–energy equivalence formula E = mc2 (which has been dubbed "the world's most famous equation"), he received the 1921 Nobel Prize in Physics "for his services to theoretical physics, and especially for his discovery of the law of the photoelectric effect". The latter was pivotal in establishing quantum theory.
On 30 April 1905, Einstein completed his thesis, with Alfred Kleiner, Professor of Experimental Physics, serving as pro-forma advisor. Einstein was awarded a PhD by the University of Zurich. His dissertation was entitled "A New Determination of Molecular Dimensions". That same year, which has been called Einstein's annus mirabilis (miracle year), he published four groundbreaking papers, on the photoelectric effect, Brownian motion, special relativity, and the equivalence of mass and energy, which were to bring him to the notice of the academic world.
The Annus Mirabilis papers are four articles pertaining to the photoelectric effect (which gave rise to quantum theory), Brownian motion, the special theory of relativity, and E = mc² that Albert Einstein published in the Annalen der Physik scientific journal in 1905. These four works contributed substantially to the foundation of modern physics and changed views on space, time, and matter.