So, how about a poll:
 Please estimate the likelihood of the original cutlass being an authentic (even if restored) weapon and not a 20th century copy. 
 Please give a numerical value from 0% to 100%.
I suggested this approach, and I should be the first  one to "put my cock on the block"  (a South African expression I learned from my friends. Please notice complete absense of urological implications: it refers to a poultry specimen of male persuasion.  
  
  
  nobody believes me?)
 My number: 30%