Prior issue.
Prior issue. Prior issue means an issue of obligations all or a portion of the principal, interest, or call premium on which is paid or provided for with proceeds of a refunding issue. A prior issue may be issued before, at the same time as, or after a refunding issue. If the refunded and unrefunded portions of a prior issue are treated as separate issues under 1.1489(i), for the purposes for which that section applies, except to the extent that the context clearly requires otherwise, references to a prior issue refer only to the refunded portion of that prior issue.