In 2007, John Albanese partnered with twenty-two leading members of the numismatic community to create the Certified Acceptance Corporation. CAC accepted coins grading by other companies and certified top quality examples with a green or gold sticker. These stickers have become universally recognized as the highest standard attainable for certified coins.
It is a well-documented fact that CAC-stickered coins command a premium in the rare coin market. Why, one may ask? The answer is simple. Quality alone determines the value of a rare coin, and the CAC sticker provides an easy way to identify a premium coin for the grade.