Depicts the seal of Prince Rainier III (an armored knight) encircled by the country name and the twelve stars of Europe. Date below divides mint and mint master's marks.

• Mintmark of the Paris Mint (Monnaie de Paris in Pessac): Cornucopia (horn of plenty)
• Mint master's marks:
– 2001–2002: Horseshoe (Gérard Buquoy)
– 2003: Heart with the initials of the mint master (Serge Levet)
– 2004–2010: Hunting horn with a wave and a fish (Hubert Larivière)
• Engraver: Roger B. Baron

A geographical map of Western Europe spans the outer ring and inner core on the left side of the coin.

12 stars are located on the left side of the outer ring, with six stars atop the map of Europe and six stars below it; six vertical stripes cut across the inner core of the coin, visually connecting the upper and lower star segments.

Luc Luycx, a designer at the Royal Belgian Mint, designed the Euro’s common reverse; his initials, LL, are seen on the right side of the design, just under the “0” in “20.”

A smooth edge separated into equal sections by seven indents (Spanish flower)