Obviously cleaning is very serious for higher quality coins. My Question: At what Grading Point is cleaning not really an issue any more or is it always an issue? For example, I regularly see AG-3 coins described as "cleaned". Does it really matter at that point? And how can you tell? This extends beyond AG-3 - for Barbers, Walkers, SLQ's, you can have VG coins where you can barely see the date and the whole "cleaning" question becomes more important. I dunno. Just throwing it out and see if it's interesting to anyone else.