11 March 2010
Found at Izismile, where there are additional photos, but that site unfortunately seldom gives credit to original sources; if anyone knows, please notify me and I'll switch the credit. Brief notes at the link suggest that this weapon was crafted in the mid-nineteenth century based on much older Spanish technology. Despite half an hour of Googling, I've been unable to come up with any further information. Perhaps someone can read the name of the "artilleria" etched near the hilt.