Chain guard is aftermarket. Wald, perhaps? It looks good on there.
No, you don't have a bike that's original by any means. But look at what you do have: A 1949 Schwinn built bike with a very cool headbage. A nice looking set of S2 wheels with ND hub (works great, IMO). Skip tooth drive (they aren't making any more of those). Vintage pedals with blocks that look to be in good condition. And it's a complete rider. I wouldn't try to put this one right. My Corvette is a lot closer to correct than this, and I know it's just plain not worth it. Enjoy it for what it is, and get some knowledge. And welcome, from another recent newbie.