Wow! What a great forum this is! Every one is friendly and informative. I'm a ex union welder and pipe-fitter so I know my metal, but anvils , not so much. Thank you all for your input. No, I'm not the original John Henry but I have swung a sledge hammer and still do! The anvil dimensions are 27and 1/2"overall with an 11" horn. It's 11" high and the top is 16" by 4". The only markings I can see are on the front under the horn. I can make out the numbers 155 194481. No visible names. I live in the Manchester NH area. Thanks so much for your help.