Quote Originally Posted by martin earl View Post
There is only one "face" on the FRN, deface can only mean doing damage to that side of the bill. Clearly, the back is not the face, stamping the back of the bill is not against the rule, as it does not reach the legal definition of "defacement".

Notice also this little bit in the Code evidence of debt, not even their code claims the bills are or have value as money.

Leave the face of the note(s) alone and there is no defacement.

Demanding redemption of lawful money, nor stamping the note changes the fact it is "evidence of debt" it simply keeps the obligation to pay that debt with the issuer and endorser of the note in the case of Federal reserve notes, the Federal Reserve and the Treasury Department of the US.
ah!!! thank you martin earl...it is so easy to overlook true definitions. For those wondering, Black's Law Dictionary defines "deface" as:
To mar or destroy the face(that is, the physical appearance of written or inscribed characters as expressive of a definite meaning) of a written instrument, signature, inscription, etc., by obliteration, erasure, cancellation, or superinscription, so as to render it illegible or unrecognizable. Linney v. State, 6 Tex. 1, 55 Am. Dec. 756. See CANCEL