I'm not sure how to handle this case.
Here is what I found so far:
https://www.ngccoin.com/coin-grading/grading-scale/adjectival-grades/
For some bulk submissions, NGC will allow the submitter to request that only the adjectival grade be printed on the NGC certification label. This is generally done only for large submissions of relatively common coins. The coins must still meet NGC’s requirements for the numeric grade range for that adjectival grade. For example, a coin that would grade AU 58 cannot receive an adjectival grade of UNCIRCULATED.
UNCIRCULATED is often paired with the additional qualifiers of BRILLIANT, CHOICE, or GEM. NGC considers BRILLIANT UNCIRCULATED to be any coins that would grade from 60-70 on the Sheldon Grading Scale. CHOICE UNCIRCULATED is considered to be any coins that would grade from 63 to 70. GEM UNCIRCULATED (sometimes indicated as GEM UNC or GEM BU) is used for coins that would grade from 65 to 70.
The NGC cert lookup tool requires to enter the minimum numeric grade associated to the adjectival grade.
For example: