Meet The Owners

Profile photograph of Executive's co-owner Frederick J. Bart.

Frederick J. Bart

Frederick J. Bart is the author of United States Paper Money Errors,the 4th edition of the definitive reference was released in late-2015. He has appeared on CNN, NBC, FOX, and been quoted in USA Today. During the last year, Frederick has appeared multiple times on the reality TV show Pawn Stars and in the full-length documentary, $2 Bill Movie which debuted at the Fort Lauderdale InternationalFilm Festival before nationwide showings. His personal paper money collections include: Serial Number One National Banknotes By State, Large and Small Size Serial Number One by Type, and $100 Large Size Type Notes. He joined the American Numismatic Association in 1973, foreshadowing a lifelong involvement in coins and currency. By the late-1970s he was advertising sporadically in Coin World and, in 1981, issued his first price list featuring paper money.

Despite early numismatic entrepreneurship, Frederick pursued a traditional career route as a trauma surgeon and performed reconstructive surgery for more than a decade before returning to his first love. BART, Inc (the parent corporation of Executive Currency) was founded in 1997. During the past two decades, Frederick J. Bart has handled nearly every major US paper money rarity, including the $1,000 1890 Treasury Note or “Grand Watermelon,” the first piece to realize more than one million dollars at public auction. Frederick was selected for full membership in the prestigious Professional Numismatists Guild, an honor bestowed upon very few currency dealers since the PNG's inception sixty years ago.

Contact Frederick directly at
Profile photograph of Executive's co-owner Bianca B. Bart.

Bianca B. Bart

Bianca B. Bart was born into a home where numismatics often provided a topic for dinner-table discussions; as such, her interest in the industry was nearly predictable. In addition to seeking mentors within the field, she enjoyed an internship at a top tier third-party grading firm immediately after obtaining a bachelor’s degree from Michigan State University. She holds membership in several numismatic associations, including being a Life Member of the American Numismatic Association. Most impressively, she remains one of the youngest members to have been awarded full membership into the prestigious Professional Numismatist Guild. In 2023 she took the helm as CEO of the corporation.

In her time outside the office, Bianca enjoys spending time with her spouse and their French Bulldog, Francois. During Bianca's time at Michigan State she played on the women's ice hockey team, but after graduation she swapped her Spartan jersey for a striped one and became a referee. She remains an active and avid member of the ice hockey officating community and has officiated international, professional, junior, and NCAA D1.  As a self-proclaimed coffee connoissuer and globetrotter, she's usually not too far from an espresso... or an airport.

Whether your budget is under $60 or over six-figures, Bianca looks forward to connecting with and assisting you. 

Contact Bianca directly at

Doris A. Bart

Doris A. Bart encountered her first error in 1983. This exposure served as a catalyst to alter her life course from a surgical “scrub” nurse to numismatist. She is the co-author of chapters on paper money errors which appear in major guidebooks such as PaperMoney of the United States (Friedberg), Standard Catalog of United States Paper Money (Cujah), and others. Doris attends every major paper money convention and auction. Her ability to direct clients to the fair market value, allows her to establish a sensible bidding cap as she represents several clients in the same sale. Doris is president of Executive Currency, overseeing the daily operations of the firm and its staff, including its online auctions and website sales. As an avid collector, Doris put together the finest assemblage of error notes on the $2 denomination, and in June of 2018 her holdings were passed onto new collectors after it was auctioned. Doris is a member of the ANA and an associate member of the Professional Numismatists Guild.

Contact Doris directly at
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