Indiana Code Title 27. Insurance § 27-1-20-4

Sec. 4. If any investment when made or purchased conforms to the requirements of this law, or of any law of this state at the date of such deposit, it shall continue to be eligible for deposit for the full amount thereof so long as:  (a) in the case of an interest-bearing investment, the interest is not in default for more than two (2) years;  and (b) in the case of a dividend-paying investment, the dividends are not unpaid for more than two (2) years:  Provided, however, That when there shall be a default in the payment of interest, or a failure to pay dividends, for a period of more than two (2) years, the commissioner may, if he deems it advisable, require the company to furnish reasonable proof of the then fair value of the investment and the same shall thereafter continue to be a proper investment and available for deposit for the fair value thus determined, not exceeding the amount due on any given promise to pay or the amount paid for a given share of stock.