John Dannreuther is one of the foremost experts in the playing field of numismatics, and has been a full-time dealer since 1973. Dannreuther was a co-founder of the Professional Coin Grading Service ( PCGS ) and has devoted his career to combating the write out of fake, repaired, and over-graded coins. His specialties include colonial and territorial coins, rare United States gold and type coins, and error or special strike coins. As a adviser, the services he offers include appraisals, auction bid, and want tilt fulfillment .
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