Good options include local coin shops like Long Island Rare Coins in Massapequa, Collectors Coins & Jewelry in Sayville, and Liberty Jewelry & Coin Gallery in Deer Park. Pawn shops such as Gold Coast Jewelry & Pawn and Empire Pawn of Nassau also buy coins, though prices can vary.
For rare or valuable coins, check Yelp, Yellow Pages, or the Better Business Bureau to compare ratings before choosing a dealer. If your collection includes rare or high grade coins, consider a member of the Professional Numismatists Guild for a fair appraisal. Always get quotes from two or three places before selling.