Maharaja Kerala Varma II died in 1943, and was succeeded by his younger brother, as Maharaja Ra
vi Varma. Ha
ving already waited a fair while for his turn, he only sur
vived until 1946.
His reign started relatively quietly, with three values: 9 Pies, 1 Anna 3 Pies and 1 Anna 9 Pies. However ...
The first version of the 9 Pies, SG 98, which appeared in 1944, showed him with mutton chop whiskers, or else an exaggerated cheekbone

It was replaced in 1946 with a Die II, without the whiskers/cheekbone, as SG 98a:

This stamp exists perf 13 or 13x13½. The perf 13 is the good one (£18 used); the one above is the cheaper version (£4 used).
The 1 Anna 3 Pies also exists in both perforations. Here is the cheaper perf 13 version, SG 99

And just for Spock, and any North American readers who've lasted this long:

This is the perf 13x13½ version. The US seller (presumably using some simplified version of Scott) who sold it to me left some serious money on the table. Gibbons rates the perf 13 version (SG 99) at £8 mint - and the perf 13x13½ version at £325 mint.
The 1 Anna 9 Pies stamp, SG 100, is another stamp worth more used than mint:

This is a late use, after Indian independence in 1947, when
Cochin and the neighbouring state of Travancore were merged. Travancore had used its own currency, but now surcharged its stamps in Indian currency. Stamps of both States were used interchangeably throughout the newly merged State of Travancore-
Cochin. Here, Travancore-
Cochin SG 4 is used with
Cochin SG 100.