What Makes This Anvil So Special?

All comments are now on the Fireball forum, a place to ask questions, share your thoughts, and easily search for topics that interest you. Find it here: https://fireball.discourse.group/ We resurface a 100 year old Kohlswa anvil. Will Stelter and I discovered a neat trick by bouncing a ball bearing to observe how dense the steel of the anvil is. Then we compared our anvils to see which one was bigger and better! This is a big anvil. What makes an anvil good? Who makes the best anvil? What is a good cheap anvil? How to machine an anvil flat? Do I need an anvil? Is flattening an anvil bad? Will Stelter’s video https://youtu.be/rkwKkl4Ol1c https://fireballtool.com/