Help! Can you identify these grabhandles???

Can anyone help me identify what year these grabhandles are from? The previous owner of my 3rd Gen included them in a box of parts but they don't fit on my 3rd Gen or my friends 4th Gen. The previous owner had mentioned that her father had owned an 80's model Interceptor at one point so I believe they are either from a 1st or 2nd Gen bike. Can anyone help identify what year bike these handles came from and tell me if they will work with any other years?





Rollin