Authenticators? please help!

[masp3392]

Kind of new to the site and I've always been a miami hurricanes game worn collector just not as extreme as I am now. So with my evolving efforts comes the thirst for more knowledge.

I have jerseys that are 100% authentic but i don't have COA's with them.

Is there any company/business that authenticates jerseys? (legit)

thanks in advance!