Gee Fred, I am glad you are not a Dr. because with your record you would have massive malpractice suits against you for your "guessed" diagnostic abilities. Before you ask, it looks to be acid etched. As far as I can see it is just discoloration or "if in fact" it is a defect in the etch, most likely a defect in the template. Since you can never be wrong I am sure you will have a response but, my record is far better then your school of witchcraft. Happy New Year! Bob
Bob, That was a tentative "diagnosis". Let me see if I do a better with job with a smaller version of this one, and find some pictures after lunch. Fred
