title_body: Is it possible to identify this bottle and its contents?
upvoted_answer: The label looks like Serbian, and says: 
  
  Гарантовано природна (garantovano prirodna) = Guaranteed Natural
  стара 10 година      (stara 10 godina)      = Aged 10 Years
  
  
  I don't see anything that identifies it further. But if this was offered as a "typical" Yugoslav gift, it might well be barrel-aged plum brandy (slivovitz).