What you can’t see well in the pictures is the tiny cracks in what is left of the edge. They were not visible until I used a pressure washer to clean off the dirt and grease that had built up on the anvil as it sat in the corner of a shop for the last 30 yrs. The anvil does still ring so I do not think I have any de-lamination of the plate, except on the very edges where it is severely mushroomed over and cracking. After the advice from this forum, my plan is to just use the center of the face and make a block or two that I can mount in the hardy hole anytime I need an edge. There is a local repair event this week that I will try and bring the anvil to. That way some of the veterans can put there own eyes on it and point me in the right direction.