The ornamental design for a romannumeralelectro-optical display, as shown and described.
FIG. 1 is a face view of the basic character and the font formed therefrom
of a roman numeral electro-optical display showing my new design;
FIG. 2 is a face view of the basic character of the font formed therefrom
of a roman numeral electro-optical display showing a modified form of my
new design; and
FIG. 3 is a face view of the basic character and the font formed therefrom
of a roman numeral electro-optical display showing another modified form
of my new design.