Interesting Toning on This Morgan Dollar - Your Thoughts on It

Here's a neat Morgan dollar that I thought had very interesting toning. The coin is very lustrous in the areas not covered by a pink/lavender matte patina. The areas that are toned a pinkish/lavender have no luster. They have more of a matte, powdery surface. The obverse is almost completely white. How do you think it toned this way and what do you think it would grade at a major grading service.

Brandon Kelley - ANA - 972.746.9193 - http://www.bestofyesterdaycollectibles.com
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How's that for a guess......... guess the same thing could have happened in an album but the colors look to vibrant for me to be album toned...