Certified Acceptance Corporation (English Wikipedia)

"Frequently Asked Questions". CACcoin.com. Certified Acceptance Corporation. Retrieved 5 September 2016. [Question:] 5. I noticed that CAC uses the term "premium quality" to describe coins that receive a CAC sticker. How does CAC define premium quality? [Answer:] For many years, coin dealers and advanced collectors have used the letters A, B, and C among themselves to further describe coins. C indicates low-end for the grade, B indicates solid for the grade, and A indicates high-end. CAC will only award stickers to coins in the A or B category. C coins, although accurately graded, will be returned without a CAC sticker
"CAC". caccoin.com. CAC. Retrieved 2015-09-05.
"Coins Accepted for Submission to CAC". caccoin.com. CAC. Retrieved 2015-09-06.
Rosen, Maurice. "An Interview with JOHN ALBANESE". caccoin.com. CAC. Retrieved 2015-09-05.

cdnexchange.com

"Heritage adds CAC Population Data to Rare Coin Auction Archives". coinlink.com. Coin Link. Archived from the original on 2014-02-05. Retrieved 2015-09-12.
"Heritage adds CAC Population Data to Rare Coin Auction Archives". coinlink.com. Coin Link. Archived from the original on 2014-02-05. Retrieved 2015-09-12.

Ferguson, Mark. "CAC Begins Eighth Year of Brand Recognition and Market Influence". coinweek.com. Coin Week. Retrieved 2015-09-24.
Ferguson, Mark. "Comprehensive Market Study". coinweek.com. Coin Week. Retrieved 2015-09-12.
Winter, Doug. "What Can CAC Population Figures Tell". 2015-09-12.

"Certified Acceptance Corp. plans fee increase". coinworld.com. Coin World. Retrieved 2015-09-12.^{[permanent dead link]}
Roach, Steve. "The value of a CAC sticker". coinworld.com. Coin World. Archived from the original on November 28, 2020. Retrieved 2015-09-12.
"Mysterious CAC gold stickers". News: U.S. Coins. Coin World. Retrieved 5 September 2016. What kind of coin gets a CAC gold sticker? CAC founder John Albanese describes it as a coin that could 'easily green sticker at the next highest grade level.'
Roach, Steve. "Mysterious CAC gold stickers". coinworld.ccom. Coin World. Archived from the original on 2015-02-01. Retrieved 2015-09-12.
Jewett, Larry. "CAC Grading Service planned for start in 2023". coinworld.com. Amos Media Company. Retrieved 23 April 2023.

Roach, Steve. "The value of a CAC sticker". coinworld.com. Coin World. Archived from the original on November 28, 2020. Retrieved 2015-09-12.
"Heritage adds CAC Population Data to Rare Coin Auction Archives". coinlink.com. Coin Link. Archived from the original on 2014-02-05. Retrieved 2015-09-12.
Roach, Steve. "Mysterious CAC gold stickers". coinworld.ccom. Coin World. Archived from the original on 2015-02-01. Retrieved 2015-09-12.
"Heritage adds CAC Population Data to Rare Coin Auction Archives". coinlink.com. Coin Link. Archived from the original on 2014-02-05. Retrieved 2015-09-12.