Did Eli Manning and Giants create fake game used memorabilia?

A New York Post article regarding charges that Eli Manning and the Giants intentionally sold fake game used equipment. The material was allegedly distributed through several channels, including Steiner Sports, although there is nothing to suggest Steiner or other sellers knew the items may have been fakes.

If true, these charges could rock the game used hobby to its core. If Eli Manning and the Giants organization are knowingly distributing fake game used equipment, who else is also doing it? Who can you trust?