== Date == 

 ""Jan 1683 [sic – 1684?]." 

 There is a simple explanation for this.   In the 17th century ( 1600's ),  the New Year started on March 1.    So 1684 didn't start until 1 March 1684,    and the months which we would ( modernly )call January and February 1684,  were part of 1683.