When grading copper cents, there are three main subgrades: BN (brown, a tarnished cent) RB (red-brown, a cent that has began to tarnish) and RD (red, an untarnished cent) out of all of these, collectors will sometimes pay a premium for RD or RB cents because they are much more attractive. However, keep in mind that most slabs aren't airtight and your RB or RD cent may very well eventually tarnish into a BN cent, so my advice is not to pay a premium for the colour designation but rather focus on the true grade of the coin (expressed in a number from 1 being barely recognizable to 70 being perfection)
it means right back..
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Broke my scale
it means that the high points of the coin are really high
Proof
RB as it is at this time
RB means random boner
Rb is not a known indicator for the mineral diamond.
DC stands for Deep Cameo, which is a term to describe the quality of proof coins.
MS stands for mint state, and the rating of 60 is on a 70 point scale.
The letters BN & RB stand for Brown and Red-Brown, and has nothing to do with with the design of the coin, just the color.
Fine, with a rating of 12 on the scale from 1 (being the worst) and 70 being the best. Such a coin isn't in the greatest condition but has everything readable.
it means right back..
it stands for rubidium.
It means the coin is nearly perfect condition. The rating of MS69 is on a 70 point scale.
It is the average buying price for a coin.
If you mean RB, then it is Regulus Black.