To make a number so as to be checkable even in a modicum of light by using fluorescent material and a luminous substance in a full or partial section of letters and the like and other than these letters and the like.

A part 1 of letters and the like is used with fluorescent material and a luminous substance irrespective of unevenness. Differently, the fluorescent material and the luminous substance are used in a part 2 other than the letter or the like. Otherwise, the fluorescent material and the luminous substance are used in both of the part 1 of the letter or the like and the part 2 other than the letter or the like. Since a number plate is brightly seeable even in the case of being utterly no light, or even in a modicum of light owing to the effect of those of fluorescent material and luminous substance, the recognition of numbers becomes facilitated.