This is the patent application for the vise by Fisher in 1883. http://www.google.com/patents/US282975?dq=fisher+vise#PPP1,M1 It is completely original. The legs are held on with wing nuts. So far it is the only existing example I have found anywhere. The Fisher & Norris Factory Museum has posted recent pictures of it on the website. https://www.facebook.com/FisherAnvils I inherited it with my 1865 farmhouse and barn. It almost ended up being thrown out by the previous owner as they were moving out.