Need help with authentication: Michael Jordan's H. Freeman & Son suit

Hi all,
I'm new to this forum and am hoping for some guidance. I've found what appears to be a major piece of sports memorabilia: a custom-made H. Freeman & Son suit tailored for Michael Jordan. It was a lucky find at a thrift store here in Philly, and I'm now in the process of trying to authenticate it.
Since this isn't a game-worn item, what is the best way to prove its authenticity?
Are there specific types of provenance I should be looking for?
Are there any known archives or resources for H. Freeman & Son's tailoring records?
What is the standard procedure for getting an item like this professionally authenticated by a reputable third party?
I've included photos of the suit and the tag for you to see. Thank you in advance for any advice you can offer!
Comments
Here are some photos.
This is a subforum for coins.
You would be better off posting this under the Trading Card and Memorabilia forum