My 73 Sat has very small "fixes" where the quarters meet the rockers. Less than 1/4 cup of filler each side (maybe less than 1/4 cup total).
It has light surface rust in the door jambs, under the chrome on the cowl, and on the trunk lip.
Aside from the usual surface rust on the frame, that's it.
I consider that pretty dang clean.
My 66 Coronet has a nickel sized hole on one quarter, some weak metal in the same place on the other side, but not through, and quarter sized holes in the dog legs of both fenders. Has surface rust with a few pitted areas on front floor boards.
I'm callin' that one clean, too, but it has quite a few dents that need attention.
I once had a guy trying to sell me a 66 Charger that had foot sized holes in the floor boards, and half dollar sized holes in the cowl.
I'll always remember him banging on the cowl, next to a big hole, saying "now THAT's SOLID".