Leather and Brass Safety Flask

Leather and Brass Safety Flask, known as a 'Boche Charger Flask' with 6,7 and 8 dram measures.
This flask is in superb condition with all seam stitching intact, the only issue is the base tab that would hold a ring/lanyard is torn.

The leather has no tears or otherwise, all screw heads are excellent.
Fine quality radius knurling on the glass bezels, the glass on both sides are perfect with no cracks or heavy marks.
The flask works perfectly, and has a roller spring for tension upon the head being tilted.