31 C.F.R. § 346.6 Nontransferability.
Title 31 - Money and Finance: Treasury
United States Individual Retirement Bonds are not transferable, and may not be sold, discounted or pledged as collateral for a loan or as security for the performance of an obligation, or for any other purpose.
Title 31: Money and Finance: Treasury
PART 346—REGULATIONS GOVERNING UNITED STATES INDIVIDUAL RETIREMENT BONDS
§ 346.6 Nontransferability.