A 1926-D Peace Dollar graded as “CAC UNC DETAILS CLEANED” is a. Genuine, uncirculated coin that has been chemically or physically cleaned. At some point, which has prevented it from receiving a standard numerical grade from a major service like PCGS or NGC. The CAC sticker indicates it is a premium example compared to other “details” coins. Meaning of the Terms. This is a Peace Silver Dollar minted in 1926 at the Denver Mint. The coin is composed of 90% silver. This indicates the coin’s general condition is Uncirculated (Mint State), meaning it saw no wear in actual commerce. However, it has a problem that prevents a standard numerical grade. This is the specific “problem” (or “details” qualifier). Cleaning a coin, even with a cloth or chemicals, leaves microscopic hairline scratches or an unnatural sheen that is easily detected by experts and is considered damage by the numismatic community. A cleaned coin is generally less valuable than one with original surfaces. CAC (Certified Acceptance Corporation) is a third-party service that verifies the quality of graded coins. A CAC sticker on a “details” coin means that CAC has determined the coin is a high-quality example. For a coin with that specific damage. Possessing above-average eye appeal despite the cleaning.