I recently acquired a wrought iron Arm and Hammer anvil. The logo is stamped in the side as opposed to being raised from the surface. This, as I understand, is much more desirable since the raised logo would indicate a Vulcan Arm and Hammer which is cast iron. It weighs 366 lbs. I'm not worried about the value of the anvil as I was gifted with it and intend on gifting my son with it 40 years from now. What I am interested in is hoping someone on the forum can assist me in dating it. The serial number on the foot is 31538 I believe. I'd hate to run out and purchase a copy of Anvils In America for $65 only to date it. I don't mean to sound as though I intend on benefiting from someone else having invested in the book but I am hoping someone is willing to share the info.