Okay, what are the red flags so I know for reference?

So in your opinion what are the odds of this being authentic? That’s my main concern.

Any idea how I should approach searching? And what happens if I can’t find any with the same tag? Thank you with your help so far

Yes I was told it was from the 70’s

Here’s those close ups

I’m not confident I measured it right but I’m pretty sure the pit to pit is in the area of 23-24 inches

Anyone know anything about this tee or its tag? Completely single stitch.