White spots on Silver bullion coins have been a known issue in the global bullion market for years. While white spots do not change the purity or composition of bullion coins, investors have expressed concerns about their impact on the coins’ aesthetic quality.
Determined to get to the bottom of the elusive white spot problem, the Royal Canadian Mint engaged in a four-year process of research and exploration that culminated in 2018 with the announcement of MINTSHIELD™ surface protection, the first proven, proprietary solution for significantly reducing the occurrence of white spots. Accelerated testing confirmed the surface protection would significantly reduce the appearance of white spots for years.
MINTSHIELD™ is engineered to support the long-term protection and integrity of bullion coins to meet the needs of the global market. All Silver Maple Leaf bullion coins dated 2018 and later are now protected with MINTSHIELD™, significantly reducing the occurrence of white spots.