About AutographCOA (ACOA) Autograph Authentication

AutographCOA.com Authentication was launched in 2017 out of the the Real Autograph Collectors Club (RACC), the most popular online community of in person autograph collectors, enthusiasts, fans, and experts on the planet. The RACC community includes a network of experts which spans worldwide: the best and most experienced of whom now serve as authenticators, analysts, and consultants for ACOA authentication.

With centuries of combined personal experience specifically in the entertainment, music, and political autograph field, the ACOA team has directly obtained over 300,000 autographs in person. We take pride in offering services exclusive to the fields we specialize in. Our consultants' experience begins in the early '80s and extends right up until modern in person celebrity autograph collecting today. Our expertise is based on our collective experience, direct knowledge, and extensive exemplers, rather than on third-party guesswork.


Our Authenticators

Justin with Pop superstar Michael Jackson

Justin Steffman

Lifetime autographs obtained: 30,000+

Justin Steffman is a lifetime autograph enthusiast and leading authenticator with over 20 years of experience in the field. Justin is passionate about helping the collecting hobby and approaches every authentication with great care and diligence.

Born in Connecticut, Justin began meeting stars and obtaining autographs in person as a teen before relocating to New York City. Over the span of nearly two decades, Justin collected autographs in nearly every State and major city nationwide. He has personally met and obtained autographs from the majority of legends in music and Hollywood during his pursuits, and thousands of other famous people; ranging from reality stars to U.S. presidents.

Justin was featured on Paul McCartney's Back in the U.S. tour documentary, has made appearances on A&E and Fox television, and once appeared on the cover of both the NY Post and the NY Daily News while pursuing autographs.

Justin is the co-founder and lead moderator of the Real Autograph Collectors Club (RACC), an online community of in person autograph collectors and sellers with 9,000+ members in over 100 countries. Justin has also worked extensively as a celebrity photographer and his images have been featured throughout entertainment and news media, including Rolling Stone magazine, the Today Show, SNL, People magazine, and even in feature films. He is also a YouTube Silver Button award recipient with over 100 million video views.

Some of Justin's most memorable autograph experiences include touring coast to coast for Paul McCartney and Simon & Garfunkel, hanging out with Willie Nelson on his tour bus, and spending a day backstage with the Beach Boys.

Today, Justin resides with his wife and two children in southern Maine and acts as the Leading Authenticator and CEO of AutographCOA. He is a proud vegan, web entrepreneur, and pop culture aficionado.


Bjarne with Country music superstar Garth Brooks

Bjarne Soderholm

Lifetime autographs obtained: 10,000+

Bjarne Soderholm has spent over 30 years (since 1984) obtaining autographs in person throughout Sweden, Denmark, and the States. Bjarne's primary focus has always been on music and movie stars.

Bjarne's personal favorite collecting highlights include getting Def Leppard on a plane between Stockholm and Gothenburg in 1988, and his achievements over the years with Bob Dylan, Paul McCartney, Kurt Cobain, and Madonna.

Now residing with his family in Florida, Bjarne brings a great deal of expertise to the AutographCOA authentication team, and continues to collect in person autographs presently.

Jeff with U.S. President Barack Obama

Jeff Stenzel

Lifetime autographs obtained: 10,000+

Jeff Stenzel has been researching and collecting autographs and memorabilia for most of his life. His hobby has taken him all over the country. Jeff is an avid collector of historical, presidential, film, musicians, and sports autographs and has collected thousands of in person signatures over a period extending more than 20 years.

Jeff has a deep passion for filmmaking and history, and has authored a book about his pursuits and traveling, Beyond The Red Carpet. He currently resides in the Chicago area with his wife Tiffany.


Autograph Club & Collector Community Approved

ACOA is the only authentication service approved and recommended by all of the top autograph clubs and collecting communities:



Real Autograph Collectors Club (RACC)


Top Tier Analysts

Michael K. Kasmar

Michael K. Kasmar

Lifetime autographs obtained: 10,000+

Michael Kasmar has been a leader in the autograph field for the past 3 decades, with over 20 years dedicated to studying signatures and monitoring forgeries and fraud trends in the marketplace.

Michael is a published author and, as the owner of Autograph Pros, a recipient of the UACC Autograph Dealer of the Year award. His devotion to educating the public and fostering positive change in the autograph hobby has lead to his involvement with AutographCOA.

Michael acts as the company CFO and is a Top Tier Analyst of the consultation team. He specializes in conducting research on the sources behind forgeries in the marketplace and gathering details for the authentication team, law enforcement, and various safety departments of the major memorabilia selling platforms.

In addition to his extensive research, Michael also brings his full resources and insight into premium-level music authentication.

Tyler Manninen

Tyler Manninen

Lifetime autographs obtained: 50,000+

Born in Michigan, Tyler Manninen began collecting in person autographs from sports stars before deciding to relocate with his wife, Jenn, to the center of the autograph collecting world: New York City. The Manninens devoted an entire decade, near daily, to obtaining signatures in person from a hugely diverse list of celebrities and famous people.

Together, Tyler and Jenn have amased an impressive inventory and sample database of over 30,000 signatures, and built one of the most visited and collector-trusted celebrity memorabilia sites online, TopPix Autographs.

After being blessed with a son, Tyler and Jenn returned to his home state of Michigan; where Tyler now serves as Vice President of ACOA, and is a Top Tier Analyst of the consultation team; specializing in modern celebrity.

Tyler and Jenn continue to obtain autographs in person and regularly attend film festivals around the globe, collecting to this day.



Expert Consultants

Roger Epperson

Roger Epperson

Lifetime autographs obtained: 40,000+

Roger Epperson is a music industry autograph authenticator, collector, and expert with an extensive background and over 20 years of experience in authentication. Roger's specialized focus on music related autographs and authentication has established him as one of the most valued and trusted authenticators in all genres of music. From Elvis to the Rolling Stones to Springsteen, Roger's dedicated research has made him a valued resource to music autograph collectors everywhere.

Roger has authenticated for many of the major auction houses and makes frequent radio and media appearances to discuss autographs. He has studied with many of the best in the business, learning how to detect pen pressure, ink flow, letter formation, alteration of documents, and the history of writing instruments. As a consultant for ACOA, Roger offers his expertise specifically on vintage music autograph submissions.

Steve Zarelli

Steve Zarelli

Steve Zarelli is the foremost authority in the field of astronaut and aviation autographs. Steve has met many of the heroes of the space race and has over 20 years’ experience in collecting and studying their autographs.

Steve is an UACC approved authenticator and provides authentication consulting services to collectors, auction houses, and dealers worldwide. Steve is a UACC Director and proud recipient of the UACC's Distinguished Service Award.

Steve’s findings have been published in the definitive space collecting reference, Relics of the Space Race, and he has contributed articles to numerous publications including the UACC’s Pen & Quill and Autograph Times magazine. In 2017, Steve appeared as an autograph expert on Space Dealers, which aired on A&E in Europe and Australia.

Steve lives in upstate New York with his family where he is an active member of his church and community. He enjoys giving back through volunteerism.

John with Kurt Cobain of Nirvana

John Brennan

Lifetime autographs obtained: 75,000+

John Brennan is a true pioneer of the in person autograph hobby and entertainment memorabilia industry; his collecting story began in New York City back in the early 1980's. John's pursuit for signatures began with him as a teenage fan, enthusiastically pursuing his celebrity heroes for autographs. John's hobby took him (through four decades of time) wherever stars were to be found.

John's private autograph collection, some of which he showcases through his company, VIP Autographs, is museum quality, and his in person autograph knowledge puts him into the ranks amongst the most accomplished collectors of all time.

John brings his extraordinary resources and experience with all fields of entertainment autographs to the AutographCOA team, with an emphasis on his personal favorite: music.

Anthony with Adele

Anthony J. Risi

Lifetime autographs obtained: 75,000+

Born and raised in New York City, Anthony began obtaining in person autographs as a teenager in the early '80s. He has personally obtained 50,000+ autographs from film, stage, and television celebrities over a span of three decades.

Anthony is as an important and respected member of the autograph consultation team for AutographCOA and one of the most experienced people in the history of autograph collecting.

Anthony operates Mr. StarGraph, his own memorabilia company, and continues to obtain signatures throughout Manhattan in the present day.

Pete Chuka

Pete Chuka

Lifetime autographs obtained: 10,000+

Pete Chuka obtained his first in person autograph in 1979 and never looked back. Pete has been a respected authenticator of Star Wars and other modern celebrity autographs for two decades. He was an autograph panel member at two major Star Wars conventions, AlphaCon and Celebration 3, and contributes regularly as an online resource for helping dealers and collectors alike.

Pete is a resident of Westport, Connecticut and has a BS in Business Management from Fairfield University.

Garry King

Garry King

Lifetime autographs obtained: 10,000+

Garry King has been studying autographs since 1964 and is a UK-based authority on autographs. He is UACC member for over 15 years and a former chairman of AFTAL.

Garry has written numerous articles on autographs, frequents UK television, and has created and teaches a full day course on autographs that is aimed at dealers and collectors alike.

Garry's work on exposing forgers in the autograph field in the UK has been commended by hobbyists and sellers worldwide, and his work in the UK has resulted in him being awarded both UACC Autograph Dealer of the Year and AFTAL Dealer of the Year.

Roland with Pop superstar Beyonce

Roland Brödner

Lifetime autographs obtained: 30,000+

Based in Berlin, Germany, Roland started collecting in person autographs back in the 1980’s: mostly running for local VIPs.

Roland's passion and devotion to collecting music and celebrity autographs has taken him around the world. Through his work ethic and great sense of integrity, he has earned a reputation as a premiere memorabilia dealer in Europe for over 10 straight years.

When not out collecting, Roland helps to organize the annual Comic Con Europe GmbH in Germany, and frequently contributes his expertise and wealth of knowledge to the AutographCOA authentication team. He is also a proud father.

Bob with Jerry Garcia of the Grateful Dead

Bob Pivoroff

Lifetime autographs obtained: 40,000+

Bob first began obtaining music and celebrity autographs in person almost 30 years ago, in 1989. His pursuits have taken him throughout the USA.

Bob has direct experience obtaining autographs from countless legends and historical figures, including Bob Dylan, Kurt Cobain, the Stones, Nelson Mandela, the Dalai Lama, 6 US Presidents, the Beatles, and countless others. He has been an autograph staple at major events, for 3 decades, regularly covering the Grammys, the Emmys, the Golden Globes, numerous Rock & Roll Hall of Fame inductions, and the MTV Awards.

In addition to being one of the most experienced autograph seekers in history, Bob's personal collection of photos with celebrities ranks amonst the greatest of all-time, surpassing 10,000 photos with nearly every famous person possible. He is widely known amongst the autograph community and various fan communities from coast to coast.

Bob currently resides in Western Illinois with his son, and continues to collect in present day. He is an asset to the ACOA expert team.

Kevin Segall

Kevin Segall

Kevin Segall is an UACC-approved authenticator and appraiser of modern non-sports autographs, illustration art, and pop culture memorabilia. His appraisals are USPAP-compliant for estate planning, taxes, and insurance purposes.

Kevin has served on the Board of the Manuscript Society for two terms. He is a member of the International Society of Appraisers, the National Cartoonists Society, and the Ephemera Society.

He currently resides in Los Angeles, CA.

Luke with Star Wars actress Felicity Jones

Luke Harrison

Lifetime autographs obtained: 20,000+

Luke is a UK-based autograph seeker who has traveled the world collecting autographs in person. He started obtaining signatures in person prior to 2000, and has since spent almost 20 years collecting regularly in the United Kingdom, France, New York, and Los Angeles.

Luke specializes in stars from the film world, but has encountered and obtained signatures from numerous musicians, politicians, and a variety of other famous people during his life of collecting.

A resident of London, Luke continues to travel in present day to film festivals worldwide in search of more autographs. Luke is a valuable member on the consultation team for AutographCOA.