One euro coin
Dimensions: 23.25mm diameter
Made out of: Copper, Nickel, Brass
Introduced: January 1st, 2002
The second most valuable Euro coin there is, the one Euro has an outer circle of golden nickel brass, and a silver colored inner disc.
The design spans across both, with a map of Europe, twelve stars and a large number one. The coin's edge features six segments, alternating from smooth to finely ridged.