Immediately below is a link to a blog on Ebay seller Schusmsc_shdl5.
Check out the below forged Derek Jeter jersey listed (again!!!) by Ebay seller Schusmsc_shdl5.
An obvious forgery as you can observe.
The worthless COA is from Diamond Signatures Authenticaticators.
Forged Tom Brady jersey with COA from Diamond Signature Authentication.