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mark mcgwire

During Operation Bullpen, Ferreira worked with Mark McGwire’s charitable foundation to prepare a ruse to catch the forgers and counterfeiters. (Photos courtesy John Ferreira)
Autographs

Operation Bullpen’s FBI undercover agent and collector John Ferreira provides tips on how to avoid fake autographs

By Bert LehmanDec 5, 2019
Dick Bartell and Jake Powell before Game 5 of the 1936 World Series. There are several in the collection from that series featuring a Giant and a Yankee together. (Photo courtesy of Andrew Aronstein)
Collector Stories

Hobby pioneer Michael Aronstein brought TCMA cards to collectors

By Bert LehmanAug 14, 2017
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News

Director of ‘The Countefeiter’ talks about Greg Marino and the 1998 home run chase

By Bert LehmanMay 22, 2017
The forged signatures of two of golf’s legendary names, Arnold Palmer and Jack Nicklaus.
Fraud Issues

The 1998 Home Run Chase: A Perfect Storm for Counterfeiters

By Tom BartschApr 15, 2013