Intentional die abrasion can affect the entire die face or it can be quite localized. It all depends on what the technician is trying to repair/erase.
There usually is no extra value for coins that were struck from intentional abraded dies. Some will argue this point because of the 22 no-D, & 37-D 3 legger. Wouldn't it be great if the thin-necked lincoln was worth $1000???
The obverese of the coin is in very fine detail with absolutly no wear on it, it looks very sharp, neither are there clash marks.
Clash marks would have been removed on the obverse as that was the reason for the die abrasion in the first place. As mentioned, You might have seen evidence of the clash on the reverse as well if the die that originally clashed with the obverse die remained in use. You may see no die clash marks anywhere depending upon the circumstances following the clashing of the dies. If for example, the reverse die shattered as a result of the die clash, the obverse die would have been abraded to effect a repair and the reverse die would have been switched out and replaced. That scenario would cause there to be no real evidence of the clashed die other than the overly abraded obverse die. Thanks, Bill