The words “valuable security” denote a document which is, or purports to
be, a document whereby any legal right is created, extended, transferred, restricted, extinguished or
released, or whereby any person acknowledges that he lies under legal liability, or has not a certain legal
right.
Illustration A writes his name on the back of a bill of exchange. As the effect of this endorsement is to transfer the right to the bill to any
person who may become the unlawful holder of it, the endorsement is a “valuable security”.