Yes, I noticed that. It's also missing the rectangular stickers on the down tube (just uphill of the foil Gitane sticker), and also has no stickers at all on the top tube. But looking at some other Internet photos of TdFs with the DuBois fork crown (which I understand was first used in 1972), it seems that others of them were decaled the same way. In other words, mine may be standard for that year.

Or maybe not. Who can tell with these kinds of things?