Originally Posted by fernando
One more note should be added. This is the type of knife often confused with hunting (plug) bayonets, due to collectors misguidance caused by some well (?) intentioned sellers.
In the wonderfully informative book "The Plug Bayonet" by the late Roger Evans, it is noted that the plug bayonet, or its form, remained in use for many years as a hunting knife actually long after its use in its original manner of use in the gun had ended.
In looking at this interesting knife of the OP, the form also recalls that of the Chilean 'corvo'. The spectrum of Spanish knives is to me, one of the most intriguing and dynamic in often subtle cross influences.