Here are a couple laughable forgeries listed by eBay seller ineeditbaseball 

These are both on hats, and just flat out amateur attempts. Both accompanied by "FestFestSports Authentics" COAs which is just some home-made bogus "COA" printed off to scam people with.

http://www.ebay.com/itm/Derek-Jeter-Auto-Yankees-Hat-With-COA-/2314...

http://www.ebay.com/itm/DON-MATTINGLY-AUTO-HAT-WITH-COA-/2314160444...