My anecdotal values are likely out-of-date, but until a few years ago, this is what I found for the 3.5 coupes:
condition 1: $35k and up
condition 2: $27k - $35k
condition 3: $20k - $27k
condition 4: no data
condition 5: no data
The six-cylinder W111 coupes were a bit lower, with some variation for 220 / 250 / 280.
For these, condition trumped the exact model designation (as would be expected).
The W112 300 SE/coupes commanded prices below the 3.5 models.