What is this razor blade from?

yes, shaving razor, old style - a href="http://images.search.yahoo.com/images/view?back=http%3A%2F%2Fimages.search.yahoo.com%2Fsearch%2Fimages%3F_adv_prop%3Dimage%26va%3Dshaving%2Brazor%26fr%3Dush-ans&w=500&h=375&imgurl=farm4.static.flickr.com%2F3290%2F2879606225_4fb5436240.jpg&rurl=http%3A%2F%2Fwww.flickr.com%2Fphotos%2Fapswartz%2F2879606225%2F&size=146k&name=New+Razors+Septe...&p=shaving+razor&oid=a0f19b9994a4840a&fr2=&fusr=apswartz&no=20&tt=64058&sigr=11hgvsobm&sigi=11mjg9gv1&sigb=12ovb8726"http://images.search.yahoo.com/images/vi…/a