The internal part of the part represents a portrait of Maria Montessori In a geometric composition with certain didactic elements taken from its education system. On the left part, the inscription "Maria Montessori" and the brand of Rome "R" currency. On the right side the monogram of the Italian Republic "RI" and the initials of the designer, Luciana de Simoni. Respectively at the top and bottom, the dates "1870" and "2020", the year of birth of the Italian pedagogue and that of the show of pieces.