Probably the greater proportion of IHCs in circulated grades are going to be cleaned at some point, particularly the ones that are not dark or have been heavily corroded. The coin, minus the dig, has been lightly cleaned, not obviously harshly cleaned as it does not exhibit the unnatural brightness of a buffed coin. That dig does look like
PMD, and that's what killed the value on this coin, probably only worth 30% or 40% of a problem free VF.