Kurt’s Cobains Univox was a model called Hi-Flier phase 3 , and it was most likely manufactured sometime between 1974 and 1977. The main guide in determining these dates is the two humbucker pickups in the guitar which didn’t appear on this model until 1974. This is the “Natural” color of this model in extremely exceptional condition. This guitar is accessed at 2K minimum in value for serious informed buyers but priced to sell.