Illustrated below are some of the varieties of the 6 Pies issues of the Cochin Maharajas. Examples are of Sri Rama Varma the 2nd and 3rd and Sri Kerala Varma the 2nd and 3rd.(See 4 Pies (green) post for more information on varieties). The details below show some of the script varieties in the official overprints with fine, bold and type of script used.
(See also this blog, the 2 pies (brown), 4 pies (green) 9 pies (carmine), 9 pies (blue), 10 pies (blue) 1 Anna (orange-brown) in the August list of posts)