Cameo and Deep Cameo refer to the amount of frost and contrast between the raised devices on a coin and the fields of the coin. The greater the contrast the deeper the cameo effect.
Another Question Is that what they mean by "Black and White"? I have a 1968 Kennedy Proof set, and when I look at it straight, the flat areas look darker, and President Kennedy looks white, along with all the lettering and date. Thanks, David