Autograph Authentication, Stephen Koschal, the choice of the other authenticators


Stephen Koschal established 1967, is called a “Master Authenticator” who has been authenticating autographs for over 50 years.  Without question, he has built the largest autograph exemplar file in the hobby. There were attempts by a PSA/DNA authenticator to purchase these exemplars, but he was refused.   Koschal is best known for “Getting It Right The First Time.”

            The following is what the other autograph authenticators have to say about Stephen Koschal.


"Steve, thanks so much for your opinion....there are few people in this industry I have trust in their judgment like you" ...................Jimmy Spence, JSA Authentication

...your work may have helped change the certs which now clearly say that only one or more have looked at the item. Thus in some regard you have been part of the solution... hope your voice changes other policy... in fact when people ask me about you and your expertise I always give you glowing reports in fact I say that you are among the few left who really knows what he's doing..." ................John Reznikoff, Connecticut, PSA and JSA Authenticator

"...Bob (Eaton) asked if I could ask you for a favor... would it be possible for you to type up a general endorsement of our company on your letterhead... as far as we are concerned, you are one of, if not the most respected autograph authorities we know, and it we think it would be quite impressive to have a good word from you about us..."..............Ron Lavallee, RR Auction, New Hampshire, PSA Authentication

"...Jimmy (James Spence) and I needed a second opinion on this Nixon piece, and we would like your thoughts..." .............Steve Grad, California, Authenticator PSA/DNA, Beckett Authentication

“ a matter of public record, Collectors Universe paid over $300,000 in the twelve months ended June 30, 2004 for errors....we continually seek the advice and council of competent individuals outside our organization in the collectibles market-dealers, auctioneers, collectors-such as you..." ..........................................Michael Haynes, California, Chief Executive Officer, PSA/DNA


“...Bill (Miller, Autograph Collector Magazine) is a blessing to me. He is truly my best friend and best mentor a person could have. I'm very thankful that through him, I got to know who you are better because he is so honest that I know that when he thinks highly of someone like he does of you, it is dead on target... I would have just liked to see eBay reach out to someone like you in the cases they needed guidance... I think your views on how eBay should correct their problems are important and they should listen. When someone has done something as long as you have, there is wisdom that many can benefit... " ..........................................Brandon Mysinger, California, Global Authenticator, eBay Authenticator


...considering your recent articles, I wanted to bring to your attention an item that I have received several reports about... unfortunately, the authenticators that advise me on these matters are torn as to the authenticity of this piece. I wanted to bring it to your attention in the hopes that you could shed light on this item... I am writing in the hopes of establishing a direct relationship with you so that similar items may be properly auctioned... ".................John Gonzales, California, Ebay Inc. Fraud Agent


"...I love you and admire your energy... I have always looked at you as an honest man and true friend ..................................Roger Epperson, Texas, JSA Authenticator


”I, Michael Frost President and lead authenticator of P.A.A.S. Professional Autograph Authentication Services have known Stephen Koschal for over 20 years. I am proud to have worked with Stephen Koschal for many of those years on autograph studies and autograph authentication. I would consider him as the top autograph expert in the world today. Stephen Koschal's library of autograph exemplars is second to none and I have had the pleasure of using and viewing his autograph exemplar library. Stephen Koschal has written many books and 100's of articles on autograph collecting and autograph reviews and authentication. Stephen Koschal is one of my teachers and mentors when it comes to autograph studies and authentication. I have spent 100's of hours working with Stephen Koschal as well as reviewing his authentication work. I have always found him to be very professional and one of the most honest people I ever met within the autograph industry. In all the years I have known Stephen Koschal and worked with him I can not recall a single item ever being returned or questioned on the basis of authentication."...Mike Frost, Florida. Professional Autograph Authentication Service

We have been using (name withheld but one of the two high profile authenticating companies) as  third party authenticators. I am starting to really have some doubts about their expertise in vintage entertainment. I am attaching 9 Sinatra signatures. Can you help by examining them...could you give it a quick look-over and get back to me? I hope all is well with you and I thank you for your last minute help.".........................Doug Norwine, Texas, Director Music & Entertainment, Heritage Galleries/Auctioneers


"...formally express our firm's sincere appreciation, and the appreciation of our client, Bill Miller on whose behalf you testified in the recent case against Collectors Universe, Inc. The jury returned a verdict in Bill's favor, in large part due to your testimony explaining the inner workings of the autograph authentication industry. It was quite telling that after I finished my direct examination of you, Collectors Universe's lawyers chose not to ask you one question on cross examination. If we ever need to retain an expert witness in the field of autograph authentication, you will be our first choice..."……. Andrew S. Albert, Boudreau, Albert & Wohlfeil, LLP Attorneys At Law, San Diego, CA


...on behalf of the FBI, I thank you for your assistance in the investigation and prosecution of forger Steve Lyons, one of the convicted subjects in the FBI's Operation Bullpen case. The hours you spent working with Special Agent Timothy Fitzsimmons and assistant United States Attorney Melanie Pierson were very helpful in the government's case. Your knowledge and professionalism resulted in Judge Jeffrey T. Miller accepting your trial testimony, after qualifying you as an expert witness in this matter, You should know that in the recent sentencing of Steve Lyons, Judge Miller singled out your expert testimony as very illuminating... Judge Miller ultimately sentenced Lyons to 36 months in federal prison. I also want to thank you for your continuing assistance to law enforcement in combating memorabilia fraud... I encourage you to continue in this worthwhile endeavor." ....Kenneth W. Boschen, California, Supervisory Special Agent, FBI


“...if someone would like to call, if possible I’d appreciate it if it could be Steve Koschal...I have spoken to him in the past, and I have found him to be extremely knowledgeable response to sincere inquiries questioning the item (Ed Delahanty autographed letter) by very knowledgeable people, Ron Keurajian and Steve Koschal was to gather additional information on our own and present it to JSA.  Some of it obviously had great value, as the response from JSA was to pull the lot...”.............................................Robert Lifson, President, Robert Edward Auctions


“In the December 23, 2005, Sports Collectors Digest, autograph dealer Stephen Koschal offers his thoughts on provenance. Koschal, who is generally considered the nation's leading authority on autographs. Collectors often ask me which authentication service I recommend. I suggest Stephen Koschal Autographs at" .........Ron Keurajian, Michigan, Baseball Hall of Fame Autograph Expert, Author of Baseball Hall of Fame Autographs, A Reference Guide, 2012.

Stephen Koschal can be reached at


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