Thanks for the advice guys. Copper washer is a great idea Bruce.
I've attached a couple pics of the anvil. My best guess is it's a Peter Wright. Has an "H" marked on each of the front feet, and a "W" on the lower LH side. Marked 6/0/8 with "0" encircled by "solid wrought". Face is 7" x 27", 1 7/8" Hardy hole, 3/4" pritchel. 17" Tall and 42" long overall. Need to make a stand for it yet. In the meantime my 3 year old thinks it makes a great chalkboard!!!