AN UNUSUAL CAUCASIAN DAGGER of Shashqua form, with single-edged leaf-shaped blade struck with gold-filled maker's mark XC on one side at the forte, the hilt encased in silver nielloed with interlaced foliage, in original black leather-covered wooden scabbard with deep locket and chape nielloed en suite with the hilt on the outside, the inside of the former with nielloed inscription 'Caucasus' in cyrillic, Russian silver marks and maker's mark XC, late 19th Century