Improperly annealed quarter??

I'm wondering if this 1998 P quarter is improperly annealed or not? Any help you can give will be greatly appreciated.
"Trying to learn something new every day"

 

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Sorry, not it. It just survived and worn ED.

 

How can you identify an improperly annealed coin?

 

Environmental damage

 

"Coins with improperly annealed planchets will typically show dark brown coloration, but can also tone deep purple or have spots of purple and blue and yellow. The easy way to tell is that the luster of the annealing error coin will typically be uninterrupted and flowing freely over the discolorations. Corrosion will disfigure or destroy luster, but there are luster flow lines struck into annealed surfaces."

 

WOW, it's got some cool coloring on it, and I really like that "learning" attitude.
Thanks for posting.

 

Wow thanks for the knowledge. So then toned coins are improperly annealed? Also what are luster flow lines?
"Learning something new every day"

 

You can have toned coins that are annealed correctly. Read the attached link as it should help.
http://www.error-ref.com/improper-annealing/

 

Thanks for the help I greatly appreciate it. You have helped me out a lot I hope I'm haven't been to much of a bother. Have a great day.
"Learning something new every day"

 

It's been my pleasure.