i have an anvil the same but mine weighs about 200 pounds surface is badly damaged but i plan to use it anyway i have queens dudley written at the bottom of a crossed item like an x but bolder i cant see the top at all but wilkinson seems to come up when i typed it in and some pictures make it seem quite old maybe early 1900 around but im guessing from what i found here is a link to a farmers sales site
http://www.farmtender.com.au/listing...s-dudley-anvil

http://www.facebook.com/pg/hbcauctio...32012120228084

and a facebook antique shop they must be common from what i have found as they seem easy to find on the net