I have noticed on some 1980's Wilson jerseys an additional "flag tag" on the size tag that does not appear on all jerseys.

For example, I have several mid 80's Twins jerseys. Most just have the Wilson size tag. But, I have one or two that have the Wilson size tag PLUS a shredded flag tag hanging below.

I have uploaded two photos with what I am talking about. Does anyone know what used to be on these flag tags? And why some jerseys have it but others do not (often from same team and same season)?

I've always been curious, and any advice would be helpful. Thanks!