(a) Any claim on account of a Treasury check must be presented to the agency that authorized the issuance of such check within one year after the date of issuance of the check or within one year after October 1, 1989, whichever is later.

(b) Any claim by an indorser under § 245.6 will be considered timely if presented to the Commissioner within one year after the date of issuance of the check or within one year after October 1, 1989, whichever is later.

(c) Nothing in this subsection affects the underlying obligation of the United States, or any agency thereof, for which a Treasury check was issued.