Any mutual fire insurance company organized by special act of the Legislature prior to the year 1875 may provide in the policy of insurance a limited liability of the insured to pay upon call during the existence of the policy any portion or all of the premium not paid in cash, notwithstanding, and in lieu of, any provision in the act incorporating the company for the deposit by the insured of a promissory note for the portion of premium not paid in cash and it shall not be necessary for any company to impose any limited liability to be paid upon call or to require the deposit of a promissory note when a policy is issued for a cash premium only, in pursuance of the authority of section 17:28-3.
N.J.S. § 17:37-6