Champion Reverse Weave

I purchased this here, but it's a bit too big for me, so I'm selling it.
I bought it as an 80s Tricolor Tag NAVY Reverse Weave, but I'm not an expert, so I don't know for sure. Please judge from the images and only purchase if you are satisfied.
There is a small stain on the left shoulder area and on the sleeve.
Please check the 6th and 7th images.

Gray, gray, ink print

Shoulder width / Body width / Sleeve length / Length
Shoulder width: 48cm
Body width: 56cm (from armpit)
Sleeve length: 57cm
Length: 65cm (from collar)
Color: Gray系

There is vintage-specific damage to the neck and sleeves.
Please understand the scratches, small marks, and stains, and only purchase if you are okay with them.

This is a vintage item, so if you are not used to wearing used items or have never purchased them before, it may lead to trouble, so please refrain from purchasing if you are sensitive.
- We will assume that those who purchase this item have agreed to these conditions.
- Returns are not accepted.

● Other Notes:
It has been stored at home. Please check the details in the photos.
It will be packed compactly folded.
Due to work, it may take a few days to ship.
Thank you for your understanding.

The following is the comment from the original seller:

This is a Champion Reverse Weave.
Tag missing, probably from the 80s.

There is a stain on the left shoulder area and on the sleeve.