I meant to post that I contacted the seller to compliment her on the item and to ask if it could be from 1973, since the 1972s had buttons at the top. Here is what she wrote:

Thanks for writing and letting me know, I couldn't remember if it was 1972 or 1973. It could be 1972 because I have a picture with my husband, Eddie Mathews, and Hank Aaron together. Hanks shirt looks like it had buttons and the other 2 where V neck.. Well my husband was with the Braves all season in 1972 and only 4 months in 1973. I was only 18 then, so hard to remember. Thanks again, Trudy