3D Puzzle

#Games, toys #Letters or numerals forming geometrical figures, written or typographical matter in perspective #Letters presenting a special form of writing #Numerals presenting a special form of writing #Colours #Puzzles and their constitutive elements #Letters or numerals in perspective (decreasing towards the center, towards one extremity or towards both extremities - rectilinear) #Letters in relief or shaded #Series of letters presenting different forms of writing #Series of letters in different dimensions #Letters in heavy characters #Numerals in relief or shaded #Numerals juxtaposed or joined to a letter or a figurative element #Numerals in heavy characters #Three predominant colours