Help identify this piece

[Oiluj13]

Greetings, forum masters and ethnographic scholars,I have an unusual acquisition on my workbench that defies standard textbook categorization. Rather than sharing my own research or chronological theories up front, I want to present this artifact completely blindly to the community. I am highly eager to get your uninfluenced, raw opinions on its geographic origin, timeline, and functional purpose.I have attached four highly detailed macro views from my workshop. Please dissect the following physical anomalies:1. The Spine & Face TopographyThe blade profile exhibits a broad-shouldered, single-edged trajectory that terminates in an acute, tapering point. However, looking down the spine axis, the steel maintains a massive, uniform, completely flat "I-Beam" architecture with zero tapering for the first half of its length. This blocky spine drops abruptly into an aggressive, one-sided single-bevel chisel grind. Under magnification, the surface reveals a clear horizontal micro-laminated, heterogeneous slag-bearing matrix crossed over by a dense, cross-hatched network of manual whetstone maintenance lines. Deep, stable historic pitting runs along the bevel boundary line.2. The Asymmetric Through-Bolt HiltThe mounting mechanism completely moves away from traditional blind-tang peening or organic resin seating. The hilt is engineered as a two-piece slab-grip scale set clamped over a wide, flat, full-profile tang. The fastening layout is distinctly asymmetric: one face utilizes two factory-machined, dome-headed slotted machine screws countersunk into the wood grain. The opposite face anchors into hand-cut, rectangular sheet-metal wash plates and sleeve-nuts/peened targets.3. The Hardened Leather SheathThe sheath is constructed entirely from a thick, hardened leather hide that has naturally crazed, water-shrunk, and oil-saturated over generations. The outer seam is held together by a tight, sequential row of heavy-duty copper/brass tubular eyelet rivets driven directly through the overlapping leather lips. There is no wood or rattan presence.The Challenge Questions:Based purely on the material mix and geometry, what is the precise geographic origin of this blade core?How do you reconcile the traditional asymmetric single-bevel chisel grind with a full-tang, slab-grip through-bolt configuration?Does the combination of the tubular scabbard eyelets and the factory slot-head machine bolts point to a specific historical conflict theater or supply line modification?I look forward to reading your blind diagnostic breakdowns and seeing where the metallurgy leads us!