Plus, if it is a forgery, it seems to be done with a quick hand and why add the line when no other examples have the line? Most forgers copy what they see and are slow to write. This looks fast, which is good for the authenticity. This is a tough one. In the end, we will probably say that it is real. It looks right, but a bit sloppy. Also, I'm not sure why a forger would, after going through all the work to find a wrong backstrip copy would add that line, when it is only one extra step that would not show up on any other examples. It just seems odd. Because of this, I tend to think that it is real. Seeing a number from another copy of DITT that is close in sequence or has that same 4 or 9 will cinch it as authentic, I think.