Is "Trademark Memorabilia" a reliable authentication company?

[osmont]

I received a Manchester United Soccer Jersey Autographed by the whole team as a gift for Christmas and the company that is on the Certificate of Authenticity is "Trademark Memorabilia" and a quick search brought up no results on their reliability. I don't want to get ripped off with fake signatures so can anyone tell me if this is a legitiment company? They have a website www.trademark-memorabilia.com but anyone can make a website. Thank you