Large Framed Autographed Poster - What To Do

Hello Everyone-
I am a first time just hoping to learn more about the autograph authentication process!
I have a large framed poster with an autograph of an old Minnesota Gophers hockey coach. It's number and signed by the artist as well. I feel like its too large to ship? Are there other ways to authenticate signatures?
Perhaps I am on the wrong track, is this even something that I should be pursuing given the niche market for something like this?
All advice is appreciated. My ultimate goal is to authenticate the signature, and establish some sort of value for the piece.
Thank you so much!
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Comments
I think you are approaching it backwards. I'd establish potential value first and then decide if it's worth authenticating.
I don't know if a Third Party Authenticator would be willing to authenticate it through the glass. If you have to disassemble it then that opens up new potential issues, such as whether or not it was framed properly or if it was dry mounted to a board.
A signed index card from him sold on ebay recently for $75. The print is nicer than that but how much premium would it command is the question.
The signed print seems to be a known issue where multiples were issued. Especially if you could find any information on the issuance of the print, that might be as good or better than any TPA opinion.
Those are just my opinions. Others may have different opinions.
BTW, if you post this in the Sports Memorabilia forum you'll get more responses.
The market may be Minnesota Gophers sports fans rather than autograph collectors. I doubt it would be an item that would be faked (but in the sports memorabilia market, you never know). It would not surprise me if you could get decent money from the gophers fans. It looks like it is very nice condition and is already matted and framed. I wouldn't spend money to have the autograph authenticated.
I'd simply leave it as is; not worth authenticating IMO
IMF