This is a 19th c. niello belt from the Caucasus region. It is in very fine condition and all original without repair. The buckles often turn up converted into brooches. You know it was never worn by a cossack as it's 30 inches in length :) Of course I could be missing the obvious--perhaps it is NOT original and has been shortened for a neck piece! Anyway, the buckle is large 3 & 1/2 by 2 inches and curved. Each link is marked C. O. It is coin or about 0.850 silver. I can provide more images if desired.