The 1982 Grunt v1, Robert W. Graves, came as a carded figure. There are not a lot of concerns with getting a Grunt v1 in great shape. For paint wear, look out for the patches on the sides of his upper arms, and as with all figures with a removable helmet, look out for paint wear to the hair and eyebrows.
As with all straight-arm G.I.Joe figures, the elbows are a concern. They may be cracked, chipped, or even discolored from stress.