Mike Diamond, error coin specialist, is lead author of Coin World's weekly "Collectors' Clearinghouse," which delves into how errors and varieties are created in U.S. coinage.

Joe O’Donnell, digital content producer, joined the Coin World editorial staff in 2014. Joe writes web content, manages Coin World’s social media accounts, compiles content for daily digital eNewsletters, and contributes on occasion to the print magazine. He has enjoyed interacting withCoin World readers while covering the sale of coins from the Saddle Ridge Hoard and the 50th anniversary Kennedy half dollar releases.

John Kraljevich, a noted expert in Early American numismatics, helps modern-day collectors explore coins and paper money of the pre-federal era in "Colonial Americana."

Colin Sallee, editorial intern, joined Coin World in February, 2015. Colin handles various editorial tasks for coinworld.com. He is a senior at DePaul University, and a Staff Writer for The DePaulia student newspaper. He’s enjoyed learning more about the overall appeal of coin collecting, and enjoys the history associated with them – primarily global and ancient coins. 

Michael Fahey, senior authenticator at ANACS, shares his expertise and tips in "Detecting Counterfeits" in the regular pages of Coin World and also guides collectors in learning to grade U.S. coins in his popular "First Grade" column published in the Coin Values section of the monthly Special Edition.

Louis Golino has been a collector of American and world coins since childhood and has written about coins since 2009. He writes about modern coins and other numismatic issues for Coin World. He is a founding member of the Modern Coin Forum.

Michael Bugeja, a coin collector since childhood and professor of journalism, guides new and beginning collectors through fun-packed and enriching experiences in "Home Hobbyist."

Q. David Bowers, acclaimed as the most prolific writer and researcher in modern times, in "The Joys of Collecting," provides timely and fun-packed glimpses of collecting adventures and ideas.

John Andrew first wrote for Coin World and its related publications in 1973 and has been the London correspondent for Coin World for more than 40 years. In 2014, he was admitted to the Livery of The Worshipful Company of Art Scholars, the City of London’s 110th Livery Company. Andrew is also an Associate of the Livery of The Worshipful Company of Goldsmiths.

Beth Deisher, Coin World editor from 1985 until her retirement in 2012, brings to light the "back stories" from her 35 years of reporting on the collecting world in the column "From the Memory Bank."

Bill McAllister covers developments out of Washington, D.C. Among the stories Bill writes are those that concern new U.S. Mint and Bureau of Engraving and Printing releases, as well as the meetings and recommendations of the two coin design review bodies, the Citizens Coinage Advisory Committee and the Commission of Fine Arts. 

Joel J. Orosz is a charter member of the Numismatic Bibliomania Society and co-author of "The Secret History of the First U.S. Mint."

Susan Maltby is a museum conservator and an expert in caring for and saving coins, paper money and other related objects. "Preserving Collectibles" includes priceless tips and practical ideas to help collectors safely store, exhibit and handle their coins and paper money.

Bill O'Rourke reveals the treasures he is finding as a result of his searches of rolls and bags of modern U.S. coins in "Found in Rolls."

Rita Laws provides collectors with interesting facts and timely ideas on how to form collections and where to find coins that depict subjects and themes on coins and medals in "Going Topical," published monthly in the World Coins section of the Special Edition.

Arthur L. Friedberg, professional numismatist and expert in U.S. paper money and world gold coins, serves as pricing analyst for Coin World's Paper Money retail guide for federally issued paper money and also provides observations and insight about the paper money market monthly in "Paper Money Market Analysis." He also serves as pricing analyst for Euro Values covering retail prices for euro coins issued by 21 nations since 2002 and provides "Euro Market Analysis" for updates published in World Coins.

Michael Findlay, professional numismatist and Canadian coin specialist, updates retail values for Canadian coins (1858 to date) and provides market analysis for Canadian coins.

John Roberts, the director of attribution services for ANACS, uses expert photography and his wealth of knowledge to uncover the nuances of Morgan dollar varieties in "About VAMs."

Fred Reed, a longtime collector and writer, documents the wide world of tokens, encased coins, scrip and other forms of exonumia in "Spare Change."

Michele Orzano served as editor of Paper Money Values magazine and the Paper Money section. She has written extensively on legislative and legal topics and has won major state and national awards in graphic design and feature and news writing. Michele was essential in Coin World's ambitious coverage of the 50 State quarters circulating commemorative coin program and since 1993 has written most of the paper money coverage. She graduated from Ohio State University with a bachelor of arts in journalism.