These are made by the people who make the "Mega Ticket" blowups of tickets from historic games. "Made from authentic tickets" does sound kinda dodgy but it basically means they're copying the image of an actual ticket, as opposed to a mock-up they might have created in-house.
In the context of Net 54, these are worthless and a waste of time, because Net 54 is all about the real and authentic. But in another context - for example, if you're looking for something to display in a bar or man cave - something like this may fit the bill.
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