hey andy,
my ears are burning for some reason
i think it would be easy to lose something in that shop, but even harder to find something of interest. you must have been looking hard :-)
i believe his speciality is 15thC 'viking' swords to unsuspecting tourists wanting some english history.
i try to avoid terminology, as its purely down to opinion, but jambiya is not an indian term, and this is indian. i call this a khanjar, but again, thats me and i am happy if others differ, as long as we end up talking about the same thing :-)
tiger teeth is a descriptive term, refering to the type of khanjar this is. as far as i know (could be wrong) tiger teeth is an internet term, and one that has spread. i havent checked this, but know that non-internet users havent a clue what your talking about (i had this recently with someone, led to confusion and funny results)
i think you got there in a rare moment when he had something interesting.
also, he does many of the smaller militaria fairs in the north, so maybe worth checking him out.
just avoid the 15thC viking swords - easy to spot (brass hilt and chrome blade)