Fernando, this is quite an interesting sword.  A friend in Canada has one with the same style of guard, and he calls it a "proto-schiavona" too since its construction is even simpler than the earliest recognizable schiavona hilt, the Oakeshott Type 1.  His sword has a cat's head pommel but from its material (bronze) and workmanship (domed center with well-worked beaded deco, contrasting with a very plain hilt), we think it's a later replacement on an older sword.   
 
What I find intriguing about your (former) example is that the pommel is not the Venetian feline at all.  It's rather Scottish-looking, more precisely the biconical Type V as shown in Cyril Mazansky's excellent book, British Basket-Hilted Swords  (2005) pp 22- 23, 78.   Do you recall if there was a small groove on the lower, inverted "cone" of your pommel?  Typically, that retained the edge of the basket hilt on those Scottish swords.
		 
		
		
		
		
		
		
		
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