Depicts a vessel sailing floating under the twelve stars of the European Union, representing Europe. The issue year on the left, the monogram of the Italian Republic (RI) on the right, and the engraver's name below.

Depicts the Einstein Tower, the value on the left, the mint mark (R) on the right, the architect's name below, arch-shaped "Europe of Arts" above.

The Einstein Tower (German: Einsteinturm) is an astrophysical observatory in the Albert Einstein Science Park in Potsdam, Germany built by architect Erich Mendelsohn. It was built on the summit of the Potsdam Telegraphenberg to house a solar telescope designed by the astronomer Erwin Finlay-Freundlich. The telescope supports experiments and observations to validate (or disprove) Albert Einstein's relativity theory. The building was first conceived around 1917, built from 1919 to 1921 after a fund-raising drive, and became operational in 1924. Although Einstein never worked there, he supported the construction and operation of the telescope. It is still a working solar observatory today as part of the Leibniz Institute for Astrophysics Potsdam. Light from the telescope is directed down through the shaft to the basement where the instruments and laboratory are located. There were more than half a dozen telescopes in the laboratory.

Erich Mendelsohn (1887–1953) was a German architect, known for his expressionist architecture in the 1920s, as well as for developing dynamic functionalism in his projects for department stores and cinemas. Mendelsohn was a pioneer of Art Deco and Streamline Moderne architecture, notably with his 1921 Mossehaus design.