(L2024)

Born in Boston, Massachusetts. Married to Margaret McCullough April 7, 1979. They have two children. Guth collects half cents. An important collection of Vermont coppers was sold at auction. He is credited with the discovery of the Vermont 40 in the Smithsonian collection.

Self employed coin dealer after 1977. President of Mid-American Rare Coin Auctions, Inc. 1984 to 1988. He served on the board of directors of FUN. Received Glenn Smedley Memorial Award in 2006. Named American Numismatic Association Numismatic of the Year in 2014.

Founded CoinFacts.com in 1999. Served as director of numismatic research at PCGS in September 2004. President of PCGS 2005 to October 1, 2008. President of Coinfacts after October 1, 2008.

Guth has contributed articles to Coin World, Numismatic News, The Numismatist, Penny-Wise and World Coin News. Author of "The Copper Coinage of Vermont" in America's Copper Coinage 1783-1857 published by ANS in 1985. He received a Heath Literary Award and the Wayte and Olga Raymond Literary Award from the ANA in 1983. Author with Jeff Garrett of Encyclopedia of U.S. Gold Coins 1795-1933.

Chief investigator at the Numismatic Detective Agency.

In 2021 he was on the Coin World list of The Most Influential People in Numismatics 1960-2020. He made the list again in 2022, 2023 and 2024.

bio by correspondence, 1991