Authenticity guaranteed. 
"attic found" - needs restoration.
Fine antique islamic indonesian parang sword.  
Circa 19th century.
Superb hand forged multi-fullered blade.
Silver mounted hand carved wooden grip.
Silver mounted wooden scabbard (sheath).
   Size:
About 26 1/4 in. (66.7 cm) long in scabbard.   
About 25 3/8 in. (64.5 cm) long out of scabbard.
Blade is about 19 1/4 in. (48.9 cm) long.
  Condition: 
"as found" original unrestored, untouched, uncleaned condition with honest wear and noteceable indication of age.   
Significunt wear to loose silver mounts on scabbard.
Blade should clean up nicely, needs to be re-set into the grip. 
Fine quality example - deserves restoration.