Nice Looking Eye Appeal!

One common novice mistake in numismatics is that people confuse toning with good eye appeal. Big misconception here.
Toning provides an opportunity--an opportunity for a coin to show good character...that being said, the opportunity could be completely missed and the toning will adversely affect the coin in the case of deep, black spotting that could be considered environmental damage.

From my experience, ~60% of the toned coins I see have negative eye appeal, according to the guidelines set by the PCGS. http://www.pcgs.com/eyeappeal.html