Cleaned And Retoned Or Partially Cleaned - How To Tell?

Cleaning a coin almost always leaves behind evidence of the dastardly deed. AU/MS coins will have impaired luster while circulated coins will typically have hairlines and "halos" around devices. I do not believe in the existence of a "partial cleaning". It is kind of like death- your coin has either been cleaned(damaged) or it has not, there is no middle ground. However, a retoned cleaned coin is almost always preferable to an excessively bright circulated coin and the value will also be affected accordingly.