I ran across this at the University of Sheffield web site, pretty interesting stuff. Be sure to check out the 'examples of razors'.
http://www.shef.ac.uk/hawley/collect...es/open-razors
There's also some nice information about the history of knife-making in Sheffield in a section about a past exhibit.
http://www.shef.ac.uk/hawley/exhibitions/cutabovee
And now I have to get back to work.......:cry: