Depicts a portrait of Lucien Grimaldi in profile facing to the left. The words 'Sovereignty of Monaco' appear above the portrait, flanked by the years 1512 and 2012. At the bottom mintmark of the Paris Mint and the mint master mark, flank the portrait from both sides. Above the mintmark the inscription 'Lucien 1st'. The outer ring contains the twelve stars of the European Union.

Lucien (1487–1523) became Lord of Monaco on 11 October 1505, having murdered his predecessor and brother, Jean II, and held that sovereignty until his death.

A year after Lucien's reign began, Genoa broke free of France, and many of its people fled to Monaco for refuge. In December 1506, 14,000 Genoese troops besieged Monaco and its castle. The blockade lasted for five months, until Lucien was able to rout the Genoese in March 1507. Monaco, and by extension Lucien, was now in a tight spot, being subjects of France but caught in a diplomatic tight spot between France and Spain, trying to preserve its fragile independence.

In 1515, Lucien bought the feudal rights over the city of Mentone, retained by the family of Anne de Lascaris, Countess of Villars, thus bringing the city, as a whole, under Monaco's sovereignty until the French Revolution.

Mintmark (bottom left): Cornucopia (Paris Mint, Pessac, France)
Mint master mark (bottom right): Pentagon with letters AG, MP and YS (Yves Sampo)
Engraver: Robert Prat

A geographical map of Western Europe spans the outer ring and inner core on the right side of the coin. The inscription 2 EURO is superimposed over the map of Europe, with the numeral “2” located in an open field representing the eastern Atlantic Ocean.

12 stars are located on the right 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 “O” in “EURO.”

The sequence "2 ★ ★" repeated six times alternately upright and inverted