If original, I think it’s the later version of the porthole hood.
I say so because of the rib on the underside of the hood, along the centerline, in front of the hood scoop opening. I’m no expert but I think it’s presence distinguishes it from the earlier version.
I also think the repoductions of the porthole hood, which are excellent and to me indistinguishable from an original, also have that added rib.
Is that another hood against the wall by the luggage rack?