Our Staff

David Kohler
President, SCP Auctions

Since founding SCP Auctions in 1979, David has become one of the most respected and sought-after dealers of rare sports collectibles in the country. An expert in the field of high-grade sportscards and memorabilia, his company has handled some of the most valuable and historically significant sports artifacts in the world. Among the many record-setting sales conducted by David and his SCP Auctions staff was the sale of Babe Ruth’s circa 1920 New York Yankees game-worn jersey ($4.4 million), the sale of the 1857 “Laws of Base Ball” documents ($3.26 million), the sale of the famous T206 Honus Wagner PSA 8 NM-MT Card ($2.8 million), and the sale of Jesse Owens’ 1936 Berlin Olympics Gold Medal ($1.4 million).

His company, SCP Auctions has handled the sales of many of the most high profile athlete estate collections ever brought to the marketplace including collections from the estates of Honus Wagner, Lefty Grove, Arthur Ashe, Pee Wee Reese, Wilt Chamberlain, Casey Stengel and Bob Cousy to name a few.

David was a founding board member with the Sports Collectibles Association International (SCAI), which promoted ethics in the sports collectibles industry.

Mike Keys
Operations Manager

Mike came to SCP Auctions in January 2019 after working in various operational roles for the better part of the last decade. He grew up in Orange County, California and spent some time living and working in New York City after graduating from Cal State Fullerton in 2009.  Mike has a multifaceted operational background. He likens his skill set to a Swiss army knife, having worked as an Operations Manager for a tourism company in NYC to running a manufacturing and distribution company back home in Orange County.

Mike is a family man at heart and spends most of his free time with his wife, Katie and two sons, Teddy & Max.  He is extremely passionate about Los Angeles Lakers basketball and almost never misses a game. His other favorite sports team is the Oakland/Vegas Raiders and due to his wife’s love of the Angels, he’s a Mike Trout fan by proxy. Mike enjoys surfing, playing basketball and occasionally plays golf when time permits.

Dillon Kohler
Marketing & Acquisitions Manager

Dillon grew up in Southern California where he played just about every sport under the sun before finding his love and passion for basketball. After lettering for two years in high school, he moved to Colorado to attend the Leeds School of Business at the University of Colorado – Boulder. During his time at school, he received a certificate in the Business of Sport Program and pursued a degree in Business Administration and Marketing. The recent graduate is a social media and digital marketing specialist, who can handle any task thrown his way. In his free time, he enjoys being outdoors and watching his favorite sports team, the Los Angeles Lakers.

Tim Gallagher
Consignment Acquisitions & Sales

Tim joined SCP Auctions in October 2020 after getting to know SCP while consigning items from his personal basketball collection. Prior to SCP, Tim spent decades in corporate sales, primarily selling information services and software to the technology and financial services industries. During his business career, Tim continued to build and grow his collection of sports cards and autographs, which started when he was a 10-year-old growing up in Dayton, Ohio.  In the late 1960’s nearby Dayton Flyers basketball, Cincinnati Royals NBA basketball with Oscar Robertson, the Bench-Rose Cincinnati Reds, and the expansion Cincinnati Bengals under Coach Paul Brown sparked Tim’s passion for sports and collecting.

Tim’s collection has been featured in Sports Collectors Daily, Sports Collectors Digest, The Dayton Daily News, and as a guest on podcast interviews including Wax Museum: A Basketball Card Podcast.

Tim graduated from Bowling Green State University with a degree in Business Administration. He is a life-long student of former UCLA Basketball Coach John Wooden’s Pyramid of Success, which are building blocks for personal and professional development and leadership. Tim enjoys time with his family, travel, music, and playing and coaching basketball.

Dennis Schlotfeld
Shipping Manager

Dennis hails from Nebraska and moved to Southern California with his wife and two daughters in 2018.  He worked for Collector’s Universe for a short stint before coming to SCP to fill our Shipping Manager role.  Dennis’ uncanny attention to detail and expert knowledge in sports memorabilia allows him to get specials sports treasures shipped out to our customers on time and in perfect condition.

As a young man, Dennis collected packs of football cards and still has them tucked away in a box at his residence.  He played college football for a local junior college and then Peru State College from 1990-1994. He was the starting Guard and Tackle all four years.  Dennis is a huge fan of the Dodgers and Raiders. He also enjoys watching Nebraska football.  Dennis spends his free time with his family.

Karen Wittenberg
Administration and Reception

Growing up Karen spent most of her time at the ice rink skating and watching her brother and cousins play hockey where she grew her love of the game. Nowadays she still spends most of her free time at the rink supporting her husband’s Adult League Hockey team or watching and cheering for the Los Angeles Kings. She enjoys working at SCP Auctions and learning about different sports and being surrounded by people with so much passion for sports and important sports memorabilia.

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