Copper Coins - Red, Red-Brown and Brown Designations...
Ian Russell on Sat, Oct 01, 2011 06:52:02 PM
When grading copper coins, the grading services assign a color designation based on how red the coin is. A red copper coin equates to originality, as this is how the coins appeared when they were first struck.
Generally speaking, all coins below Mint State (ie. graded less than 60) are considered brown, unless specifically noted.
For all Mint State grades (ie. grades 60 and above), the grading service will designate the following abbreviations after the grade:
MS-65 RD = MS-65 Red
MS-65 RB = MS-65 Red-Brown
MS-65 BN = MS-65 Brown