Born in Boston, Massachusetts. Attended Harvard. Married to Gayle Ziaks August 5, 1984, with two sons.
Full time coin dealer since age 15. PNG member after 1990. Principal in New England Rare Coin Galleries. Their auction branch conducted 29 sales from 1975 to 1982.
He was involved with the early use of computer technology for coin dealers and auction firms. Principal with Steve Ivy in the firm of Heritage Rare Coin Galleries after 1983. They have conducted auctions since 1983. He served on the ANA board of governors 1989 to 1991. He received the ANA Glenn Smedley Memorial Award in 1991, Medal of Merit in 2007 and NLG Clemmy Award. He collects twentieth century art.
He contributed the "Membership Matters" column to Numismatic News. Author of How to Grade US Coins (1990), U.S. Coin Values and N.C.I. Grading Guide.
He is also the author of two novels, The Truth Machine (1996) and The First Immortal (1997).
In 2021 he was on the Coin World list of The Most Influential People in Numismatics 1960-2020.
bio by interview 8/17/91; Conaut 147Source credit: Pete Smith, American Numismatic Biographies