100% a knock-off. most obviously due to the hilariously bad craftsmanship others have pointed out,
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the numbers should be printed onto the jersey material-- not applied as shitty (uneven) decals.
also jerseys that have the tiny team name like that use the actual logo in that chunky retarded "old-timey" font:
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not whatever this shit is
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also "Saints Black & Gold" is not a colorway for cowboys merch. some of the more obscure "salute to service" variants are like... yellow and ochre or something, but not black and gold... or to be more precise "black and gold except the flat safety-yellow player name"
this is just a cobbled-together rayon tent with a nike swoosh hot glued to the arm. i guess as uptight as scalfatty is about Netflix piracy, he does't have a problem with pirating gear from his beloved and noble fubba franchise...
EDIT: this is probably the one junior bought. looks about right, including those weird inverted-Y autopsy seams on the back:
https://teehandy.com/product/dallas-cowboys-micah-parsons-black-golden-limited-jersey/