it looks like a carlton original grip to me. i had a carlton racket and the original grip looked exactly like that. i think i saw some the last time i went to asbys
Looks like a Kason I have but there are a few grips with the ripple/ridge on the outside, just not necessarily leather ones: http://www.badmintoncentral.com/forums/showthread.php?83364-List-of-ribbed-rippled-grips&p=1415372 The SOTX one looks pretty close ...
I agree with Carlton...I had one a few years ago...the small ribbing is reminiscent of their style...