Torque Tube Identification

[Agent1320]

I have two torque tubes but I don't know what year they are for. They are both identical. I've been hanging on to these for a while and when I had to move them to get to some other stuff, curiosity got the best of me. Just wondering what year these are for as I've never dealt with any torque tubes so I don't know anything about them.

They are 72" from the edge of the bell shaped end, to the edge of the flanged end.

The bell end is 4-3/8" and the flanged end has 6 bolts.

Are they worth anything? I don't want to cut them up if someone could use them.