(1)    All municipal obligations may be payable to bearer or may be registered as to the principal or principal and interest by the clerk or treasurer of the municipality issuing them or such other officers or agents, including fiscal agents under s. 67.10 (2), as the governing body of the municipality determines. Registrations shall be recorded.

   (2)   The holder of any registrable bearer municipal obligation may have the ownership thereof registered under sub. (1), and such registration noted on the municipal obligation by or on behalf of the municipality. After such registration, no transfer thereof shall be valid unless made on the records of the municipality by the registered owner in person or by the registered owner’s duly authorized attorney and similarly noted on the municipal obligation, but the same may be discharged from registration by being in like manner transferred to bearer, and thereafter transferability by delivery shall be restored; but such bond may again be registered as to principal or as to principal and interest or transferred to bearer, as before. Registration only as to principal under this section shall not affect the negotiability of the appurtenant coupons, but every such coupon shall continue to be transferable upon delivery and shall remain payable to bearer.

   (3)   Any municipality may establish a book entry system as a means of identifying the persons entitled to receive principal and interest payments on any of its municipal obligations, maintaining such a system itself or contracting for its maintenance.