Like i was saying before, looks like there was a prob w column shift 3 speed since its been taken apart. My 67 was a slant 3 on the tree when i got it, prev owner removed the shifter lever, butchered floor for a 3 on the floor conversion that was never completed.
I converted to V8 4 speed. When i disassembled the column to smooth it out, i found a rectangle piece of steel that was broken away from the shifter tube that the shifter collar keys into. It looks like they brazed it to the tube at the factory. Had they torn the column down they could have brazed it back, and reassembled the column. However instead of the car sitting since 1981, it would have likely been used up and discarded, so good thing they never figured out the problem, or figured out how to home brew a floor shift setup.
Seeing the shift lever removed from yours i bet the column in yours has the same issue.