sought-after ! Rare 80s-90s Champion Vintage Jersey

Treasures from my parents' home!
This is an ultra-rare vintage Champion jersey from the 80s-90s.
The USA tag is also rare.
Made in Japan, with zippers at the hem and an elastic waistband with a drawstring.
Embroidered with "Champion Products" and "wedgedpants" on the left thigh, only appreciate the tag.
Furthermore, it's in near-unused condition with hardly any signs of wear, and it's a size L, but there is various slight soiling.
I haven't had it cleaned, considering the fabric, but assorted of the soiling might come out with washing.
Another one of the same item in red also turned up, and that one is in clean condition.
I think this is a rare item that doesn't come around often, so vintage collectors, please take this opportunity!