Don Mattingly Oddball Item

[Eric72]

My father collected Don Mattingly cards and oddball items. He primarily did this during the height of the junk wax era. Among the many things he picked up was this item.

I believe it's a glove tag, the type which would be hanging on a baseball glove when it was brand new.

According to a few sellers online, this was available across several years.

Does anyone know how to definitively assign a year to this item?