![]() ![]() In many cases, coins have been stored or sold in soft plastic flips or mint packaging that contains polyvinyl chloride (PVC), a chemical now known to slowly leach onto the surfaces of a coin. ![]() The techniques used by NCS are non-invasive and widely accepted by industry experts.Ĭonservation for vintage and modern coins alikeĪll coin types can be affected by surface contaminants and negative environmental reactions. NCS will never perform repairs such as filling holes or smoothing scratches, or do any type of mechanical alteration. Unlike improper cleaning, which will permanently impair a coin’s surfaces, professional conservation from NCS reveals a coin’s originality. NCS pioneered a professional approach to numismatic conservation and can safely remove these harmful surface contaminants and often dramatically improve a coin’s eye appeal. Surface contaminants such as PVC and other residues, soils, tarnish, spots and encrustation can diminish eye appeal and even permanently damage coins. What is numismatic conservation?Ĭollectible coins are susceptible to damage and changes of appearance as a result of improper storage and packaging, adverse environmental effects, mishandling, and natural changes over time. ![]() In addition to these rare and valuable vintage coins, NCS has handled coins recovered from four major shipwrecks along with countless modern coins. NCS has conserved and preserved many of the world’s most important numismatic rarities and collections, including pieces from the Smithsonian Institution. Entrusted with the world’s most extraordinary coins ![]()
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