Born in Brooklyn, New York. Received B.A. from Brooklyn College in 1971. Married to Marcye Satarsky December 4, 1977, and later divorced. They had a son and daughter. Employed as a professional numismatist after 1972. He is a specialist in numismatic research and education. He joined the staff of Paramount in 1973. Director of research for NGC in 1991. Later named Passaic City Historian.

He collects national banknotes of Clifton and Passaic, New Jersey. He has served as vice president of the Bergen County (NJ) Coin Club and as president in 1991.

Auerbach had a research library with more than 2000 books and more than 3000 auction catalogs. His library was sold at auction by Charles Davis and The Money Tree in 1992. He has done considerable research on 19th century numismatics. He is a biographer for Dr. Edward Maris and Byron Reed.

He has contributed articles to Coin World, The Colonial Newsletter, Numismatic News and Penny-Wise. He has contributed research to auction catalogs published by Mid-America, NASCA, Paramount and Pine Tree.

bio by interview 8/14/91