I cant find these lugnuts inner 15/16 x 12 tpi. outer 1 1/8 x 12 tpi. I think its an old Dexter trailer.
Looking in my book here, I show 15/16-12 inner with 1 5/16-12 outer. Inner barrel Euclid part # is E-7898, with either "L" or "R" at the end for left or right. outer nut is E-5576, "L" or "R" for whichever side you need.