It's definitely "Elfriede" so the caption may be wrong (or it was there prior its exhibition on the Place de la Concorde). Here a comparison photo (by drakegoodman on Flickr)
That image of Elfriede is too early - it seems to be when it was transported back from the front.
I found an image of Elfriede when it was on display in the Place de la Concorde - you can see the obelisk on the left of the image.
The rectangular sections cut out of the hull plates can be sen in the image. My failing memory suggested the hull cut outs were on the left side but it's
clear from the image they were on the right. The image from Les Invalides could well be Elfriede because the samples taken from the hull would not be
Ok, this is far from beeing a scientific research method (the subject isn’t of historic significance either), but I love such questions about location of such random subjects very much. Thats why years ago I had even to visit the place, where A7V 540 was abandoned north of Wasnes au Bac and Iwuy. Crazy of course, but interesting as well !
Here a quick search on Google maps from my side and … Tadaaaa, I found the place (that is not intended to be taken too sereously !).
Elfiede was parked on its way from Garde de Montparnasse to the Place de la Concorde on the park at the corner of the Rue de l’Université et Rue Fabert. The building with the prominent parapets is barely visible in the background is called Restaurant Divellec ( ?) today and the two rows of trees is about the same today.