> Character set       ¡   ¢
> --------------------------
> Macintosh Roman    212 213
> Macintosh Cyrillic 212 213
> ISO 8859-7:1987    161 162
>
> If you want to get the ISO 8859-7 character, you can say:
>
> (make-char 'greek-iso8859-7 161)
> (make-char 'greek-iso8859-7 162)

Doesn't seem to work for me, the characters look like a upside down !
and a cents character with a vertical line.