Dr Spencer Peck of Oldwick, New Jersey is an Accredited Senior Member of the American Society of Appraisers (ASA), with specialization in Numismatics. ASA is the nation's oldest multi-disciplinary society that teaches, tests and accredits appraisers.

A collector with wide ranging interests for over forty years; Peck is one of only nine ASA accredited numismatic appraisers in the United States.

The American Society of Appraisers, with over 6,500 members worldwide has, for more than half a century, served the international public as a non-profit, independent appraisal organization.

ASA is a charter member of the Appraisal Foundation which sponsors the Appraisal Standards Board (ASB) and the Appraiser Qualifications Board (AQB); chartered by Congress with setting minimum qualification requirements for certified appraisers.