Said bonds or other obligations shall be sold at public or private sale. In case any of the officers whose signatures appear on the bonds or coupons or other obligations shall cease to be such officers before delivery thereof, such signature, whether manual or facsimile shall, nevertheless, be valid and sufficient for all purposes, the same as if such officers had remained in office until such delivery. The bonds or other obligations so issued shall bear interest at a rate not to exceed 5 per centum per annum, payable semiannually. All such bonds or obligations shall be sold for not less than the principal amount thereof plus accrued interest. All such bonds or obligations issued by the Government of the Virgin Islands or by its authority shall be exempt as to principal and interest from taxation by the Government of the United States, or by the Government of the Virgin Islands, or by any State, territory, or possession or by any political subdivision of any State, territory or possession, or by the District of Columbia. Such bonds or obligations shall under no circumstances constitute a general obligation of the Virgin Islands or of the United States. (ii) (A) Subject to the provisions of this paragraph (ii), the Legislature of the Government of the Virgin Islands may cause to be issued such negotiable general obligations bonds or other evidence of indebtedness as it may deem necessary and advisable to construct, improve, extend, better, repair, reconstruct, acquire, and equip hospitals, housing, schools, libraries, gymnasia, recreation areas, sewers, sewage-disposal plants, and water systems and resources; and to construct, improve, extend and better, repair, reconstruct, acquire, and equip any other public improvement as may be authorized by the Legislature: Provided, That no public indebtedness of the Virgin Islands shall be incurred in excess of 10 per centum of the aggregate assessed valuation of the taxable real property in the Virgin Islands except that in determining the amount of such public indebtedness there shall be excluded that portion thereof for the funding or refunding of which bonds or other obligations shall have been issued. Bonds or other evidence of indebtedness issued pursuant to this paragraph (ii) shall bear such date or dates, may be in such denominations, may mature in such amounts and at such time or times, not exceeding thirty years from the date thereof, may be payable at such place or places, may be sold at either public or private sale, may be redeemable (either with or without premium) or non-redeemable, may carry such registration privileges as to either principal and interest, or principal only, and may be executed by such officers and in such manner, as shall be prescribed by the legislature of the government of the Virgin Islands. In case any of the officers whose signatures appear on the bonds or coupons or other evidence of indebtedness shall cease to be such officers before delivery thereof, such signature, whether manual or facsimile, shall nevertheless be valid and sufficient for all purposes, the same as if such officers had remained in office until such delivery. The bonds or other evidence of indebtedness so issued shall bear interest at a rate not to exceed that specified by the legislature and payable semi-annually. All such bonds or other evidence of indebtedness shall be sold for not less than the principal amount thereof plus accrued interest. All such bonds or other evidence of indebtedness issued by the Government of the Virgin Islands, including specifically interest thereon, shall be exempt from taxation by the Government of the United States, or by the government of the Virgin Islands or any political subdivision thereof, or by any State, territory, or 232