In all my perusals, I've yet to see a tanto with a serrated spine. Could be there's one out there, but I've covered a heckuva lot of knife sites. Maybe there's a niche yet to be filled. Hmmm........
_________________________
The ultimate result of shielding men from the effects of folly is to fill the world with fools.
-- Herbert Spencer, English Philosopher (1820-1903)