CFR > Title 31 - Money and Finance: Treasury > SUBTITLE B—Regulations Relating to Money and Finance > CHAPTER II—FISCAL SERVICE, DEPARTMENT OF THE TREASURY (parts 200 to 391) > SUBCHAPTER B—BUREAU OF THE PUBLIC DEBT (parts 306 to 391) > PART 363—REGULATIONS GOVERNING SECURITIES HELD IN TREASURYDIRECT > SUBPART E—Conversion of a Definitive Savings Bond (§363.160 to §363.180-363.199) > 363.164—Is a converted savings bond eligible to be converted back into a definitive bond?

363.164—Is a converted savings bond eligible to be converted back into a definitive bond?

Once a definitive savings bond has been converted to a book-entry bond, it may not be converted back into a definitive bond.