My HRA Correct Grade also came covered with grease, it was not unfired but gauged very close. Here is the current Correct Grade description at CMP. Now they are available by auction only.
CORRECT GRADE: (Very Good to Excellent)
AVAILABLE ON THE CMP AUCTION SITE ONLY
Correct Grade Rifles are similar to the Service Grade (above), but will show less wear and use. Correct Grade rifles will have all correct parts for the date of manufacture with 80% or better overall original metal finish. The stock and handguards will be of walnut and correct for the rifle but will have some dings, dents, scratches and marring of the wood finish. Stocks will have the appropriate original inspector's cartouche. The rifle bore will be very good with no significant defects and with a throat erosion of less than 4 and a muzzle wear of 2 or less. Very good to excellent condition. This grade is rare and is only available occasionally in limited quantities. Because of the scarcity of these rifles, they will only be sold on the CMP auction site at cmpauction.thecmp.org.