122 POSTAL SAVINGS \ > has passed upon the legal acceptability of all bonds submitted as security for postal savings deposits. 25 The Board of Trustees in its first Regulations for the Guidance of Banks, issued December 31, 1910, made the following ruling 26 in regard to the securities acceptable for postal savings de posits: "The following described securities at rates re spectively designated, will be accepted, [and no other] ... (a) Interest bearing bonds of the United States, bonds issued by the Government of the Philippine Islands, and bonds of the Dis trict of Columbia and the Government of Porto Rico will be received at their par value, (b) Bonds of any State of the United States and bonds of the Territory of Hawaii will be received at 90 per cent of their market value, such market value not to be considered as exceeding par. (c) Bonds of any city, town, county, or other legally constituted municipality or district in the United States which has been in existence for a period of ten years, and which, for a period of ten years previous, has not defaulted in the pay- 25 An account of his work in this connection and summar ies of his decisions will be found in his annual reports. 26 Regulations for the Guidance of Banks Qualifying as Depositories of Postal Savings Funds, etc., issued by au thority of the Board of Trustees, 1911, pp. 4-5.