NGC Conservation: Making Light Work of Heavy Residues
June 16, 2026
Whether ugly green residues or hazy films, NGC s professional conservators can take on blemishes affecting a coin s surface.
When coins are stored in improper conditions, they often end up with PVC residue or other unsightly and harmful contaminants blemishing the surfaces. Fortunately, NGC Conservation is here to help. NGC s conservationists use a variety of proprietary techniques to remove these harmful surface contaminants, stabilizing and protecting a coin s surfaces. Often, these conservation efforts also improve a coin s eye appeal. After coins are conserved, they are seamlessly transferred for NGC grading and encapsulation.
From NGC