[Jim McDougall]

Found the illustration of the Tatar ordynka with tamga -on SCABBARD mentioned in previous post and on blade of similar sword and same tamga from 2005 discussion.

Also, found detail from correspondence from Lebedynsky (1998) regarding the tamga on my shashka chape. He suggests these kinds of tamga are generally Northwest Caucusus, possibly Abaza (Circassian) but notes the shashka seems of Daghestan origin.
In the original assessment of the sword, 1997 from another source, it is noted the reverse of the locket on the scabbard is inscribed in Arabic 'Sahabi....Afand'. apparently owners name. The Kubachi workmanship is noted and star and crescent in high relief hilt motif, and the unique tamga on chape.
The blade is believed Styrian/Hungarian and earlier 19th c.

Years later in discussion with Kirill Rivkin (2018), he suggested this was likely made in northwest between Vladikavkaz and Nalchik, perhaps either Lak or Dargi Kubachiki craftsman......clearly concurring with the earlier assessment.
He noted tamga were nearly unknown on shashkas, but did seem to occur occasionally on kindjhals, and typically suggested Circassian provenance.