The power and obligation of the town to pay any and all bonds, notes, or other evidences of indebtedness issued by it under the authority of this Charter or state law shall be unlimited and the town shall levy ad valorem taxes upon all the taxable property of the town for the payment of such bonds, notes, or other evidences of indebtedness and interest thereon, without limitation of amount. The faith and credit of the town is hereby pledged for the payment of the principal of and the interest on all bonds, notes, or other evidences of indebtedness, hereafter issued under the authority of this Charter or state law, whether or not such pledge be stated in the bonds, notes, or other evidences of indebtedness, or in the ordinance or resolution authorizing their issuance. (Mont. Co. Code 1965, § 59-59.)