Bumper Jack identification help

[challenger6pak]

I believe this is out of my 73 Challenger. The only thing written on it is oil after use. Is this a 73 Challenger jack? Thanks.

[Burdar]

The base and mechanism should be gray in 73. On a Challenger at least.

Measure the length of the mast.

[Cuda Cody]

In 1970 the date (month and year) were stamped on the head of the rivet.    Not sure if they still did that in 73?

[Burdar]

Here's a picture of mine before I restored it.  I don't have the car here to measure the mast.  Maybe someone else can post the correct length.

[challenger6pak]

Mine is different.  Maybe it is a GM unit that was put in there. I'll measure it later today.

[fc7cuda]

34 1/2" if I remember correctly.