It is authentic, but missing the connecting links with the clip. The chain is probably made of nickel-silver, but could be plated steel. Reproduction links could be made and added by someone who does such work, or, perhaps, a custom jeweler. If you have the links made, be sure the original material is used and the links are shaped properly and grooved, as are the others. The chain appears to have ben heavily polished, removing the so-callled dark "burnished" background. There are varieties of chains and this one appears to be a "Type II," which had darkened backgrounds to the chain links. The paint appears to be original or a very old repaint, a good sign. It's hard to tell about the blade since there is only one partial shot of it, bit it looks OK in it. Nice grip, from what can be seen.