(c) Any provision of any law to the contrary notwithstanding, any bonds, bond anticipation notes or other obligations issued by the authority pursuant to this chapter shall be fully negotiable within the meaning and for all purposes of title 42a and each holder or owner of such a bond, bond anticipation note or other obligation or coupon is and shall be fully negotiable within the meaning and for all purposes of said title 42a. Any such bonds, bond anticipation notes or other obligations shall be legal investments for all trust companies, banks, investment companies, savings banks, building and loan associations, executors, administrators, guardians, conservators, trustees and other fiduciaries, and pension, profit-sharing and retirement funds and shall be exempt, both as to principal and interest, from any taxes imposed by the state of Connecticut or any subdivision thereof, other than estate or succession taxes.