Brilliant Uncirculated

break down by grades as common knowledge but not common practice
"Brilliant Uncirculated" = MS60 - MS62
"Select Unicrculated" = MS62 (there is some overlap with BU here)
"Choice unicrculated" = MS63
"Very Choice uncirculated" = MS64
"Gem uncirculated" = MS65 - MS66
"Superb gem uncirculated" = MS67-MS69 (with various adjectives sometimes added in front of this for MS68 and MS69)