slowoldman said:
Wouldn't that make every jersey not worn by a team member a fake? Even those from back in the day (early 70's)?
Yes, by the strictest definition! The only genuine team kit is that issued to, and worn by members of the team. That is what makes it "team kit". A Stetson worn by John Wayne in a movie is far, far, more "valuable" than an identical hat that was never worn by John Wayne.
A less stringent test might be that a team-issued jersey, even if never worn, (perhaps surplus, or "diverted" by an insider onto the black market), would be considered genuine. One bought by a punter in a store so that they could look like their heros would be a fake (even if physically identical).
The least stringent test would be if the jersey was physically identical to team kit, made by the same manufacturer in the same production run as the kit worn by the team, it could be considere "legitimate", even if it was sold to a fred at a retail store.
Look-alikes, but of differing quality by the manufacturer are even less legitimate. These are common in football and hockey. You can get an "as worn by the team" genuine jersey for big $$, but there is a whole range of lower priced and lower quality garments, the lowest end stuff not being suitable for use other than as "fashion". Rapha do this with their Sky kit.
But what would always fail the "genuine" test is a jersey made in a different era by a different manufacturer with zero connection to the orginal, and sold to freds online. It doesn't mean that they don't look nice. I wouldn't wear one, but hey, fill your boots!