The question seems to be if it is vintage or a modern reproduction/imitation. I'm leaning towards more modern (+- 50 years) based on the interior lock set, but more info would be helpful.
What is the thickness of the door at the edge? (1-3/4", 2-1/4", etc.)
We need closeup images of the edges and of the "leaded" material used for edging the beveled glass. Top, bottom, and sides of the door.
Locks may have been added/changed at any time. Older mortise type locks could have been filled and re-drilled and would probably only bee seen by you with a close examination as you are sanding the paint. Take a minute to sand all the way to the bare wood to see if you can see and wooden "plugs" or fillers for an older mortise lock set.
Interlocking copper weather stripping was in use in the 40's(?) through 60's on some homes for keeping drafts down.
ps. Gold Maven, your link goes the the Colorodo DOT Webcam site. Interesting but no woodworking tools there I could see.
EDIT: Even an image of the hinge with a ruler next to it for scale would help.