50 - Cause of action not barred.

§  50.  Cause of action not barred. A cause of action in law or equity  against any municipality in  the  state  of  New  York,  or  its  proper  officers,  arising from the action of such municipality in derogation of  its previous grant or covenant, where a previous action shall  not  have  succeeded,  in  whole  or  in  part,  owing  to  the failure of the said  municipality to produce or prove certain  written  evidence,  which  was  essential to the plaintiff's claim, shall not be barred by the operation  of  the statutes limiting the time for the enforcement of civil remedies  in favor of the successor in interest to  the  person  entitled  to  any  benefit  or  damages by reason of such grant, covenant or action of said  municipality.