Any Sports Illustrated poster experts out there?

[mrmopar]

I was trying to determine if there are multiple versions of some of the 70s-80s SI posters issued. It would appear there are, but was looking for some sort of verification from someone who is certain one way or the other.

I had 3-4 of the white framed SI posters when I was a kid. They were all from the late 70s to early 80s and do not remember any that didn't have the white border on all 4 sides.

I have recently noticed some of those posters being offered for sale online have only the border along the top, where the players name is featured. I had always assumed that someone cut off the other three borders, but with the amount I see for sale, I am beginning to doubt that theory now.

Here are two examples, Rose and Jackson, showing both styles. One seller even pictures a close up of the poster information that normally shows up in the lower white border, further leading me to believe that some versions just didn't have the other three white borders. Any information on this topic and maybe how/why they were distributed/sold that way would be helpful. Thanks.