please pardon my confusion ...on this post, But I just don't "get it" ...if you bought the autograph or autographs from a reputable person why would you need a 2nd opinion ? If you felt you needed a 2nd opinion you should not have bought it in the first place. Unless you feel its important to pay $$$ for a pat on the back. If that is the case most on this board would do that for free.
Honest dealers that know what they are doing , usually get a 2nd , 3rd , and sometimes 4th opinion before they sell it.
I hate to tell you this but the reality is that the honest and reliable guys in this hobby that have been doing this for not months or years but DECADES know a little bit more than the alphabet soup group ...and will give you their "opinions" ...which in reality is what you are paying for ...an opinion ! as there is no such thing as an authenticity machine for free ! So sorry to say I don't get it , I buy collections ALL the time sometimes a half dozen a week , and I never ...let me repeat NEVER ask for a letter of opinion. I will indeed ask where something came from but never the other , which is in most cases if it exists is thrown away.
Either an autograph is genuine or it is not ....pretty simple
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jim@stinsonsports.com
Just listed recent autograph acquisitions on my web site WOW !
http://stinsonsports.com/autographs-for-sale/