I'm still unsure when my 71 was built,  I understand that the early 71's had vents on the back hatch.  Mine  doesn't have them, I'm sure it's the original hatch, the color matches the rest of the interior paint.  Were there ever vents on the rear quarters   VIN HLS30-41253

Is the door jamb tag gone?

The cars commonly referred to as Series 1 were built into late January, 1971.  There were approximately 20,500 of them.  These cars had the vents in the hatch.  Beginning in February, cars referred to as Series 2 had the vents relocated to the sail panel behind the quarter window.   According to cars registered on Carl Beck's site zhome.com, your car was built in 08/1971.

The door (pillar) tag says the same as the vin 41253  on the top right of that same tag there is a 3 or 8 or S  I can't make it out

Is this maybe where the vents were

Yes, those were vents. Your car is a series two, there is no chance it is a series one.

You're picture is where the side pillar round vents go.  Google image series one and two.  You'll see the difference. 

 

 

 

I Kinda thought so,  I will have to measure for the exact location and drill a new hole in a new patch.  Good thing my son is in Paint & Body for a living.