We have discussed not long ago the exceptional tenegre from our member Roland, see here: 
http://www.vikingsword.com/vb/showth...hlight=tenegre
At end of this thread Roland mentioned already that it is a wootz blade, I've seen the sword not long ago in person, like Ian in the above thread I was more as doubtfully that this could be possible.  

 But to my great surprise I have to agree, the blade is wootz!  
 
 
Here with the permission from Roland a close-up picture taken as documentation for the restoration steps. 
So bad are Visayan blades!  
 
   
  