SS or CA my guess as well. Color of the grip is standard CA Plus series though.
i have bought SS bats with the same style of grips as in the picture.
I am not sure if any of the Indian cricketers use bats made from CA or AS or AM etc, given the very strong cricket bat industry and lobby in India.
Sehwag started off with SS and then moved to SG. Also given the fact that the top Indian players get bats in unimaginable numbers, they obviously want to keep the best irrespective of who has made them (especially those who are sponsored by companies who do not themselves make bats).
(I have heard) SS are kind of notorious of paying players to have TON stamp on their bats as they immediately give a impressions that bats is SS, so maybe SG are giving some of it back to SS