The design of the coin shows a partial reproduction of a young person by her ballot in the box. The envelope is holding reproduces the word "Andorra".

To the left of the figure being commemorated the years "1985" and "2015" (the latter is also the year of issue of the currency).

The shorter inscription commemorating all the design around "30 degree sections ANIVERSARY MAJORITY D'EDAT ALS 18 ANYS" (30th Anniversary of Age at 18 years).