A Lentz's Compact Operating Case, No. 10, Style A, as seen on page 45 of the "Charles Lentz and Sons' Illustrated Catalogue and Price List". The kit includes, among other things, several surgical instruments, including scalpels, a saw, a tourniquet, as well as a trepanning set.
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Citation
Lentz, Charles. "Illustrated catalogue and price list of surgical instruments, hospital supplies, orthopaedical apparatus, trusses, etc., fine microscopes, medical batteries, physicians' and hospital supplies" Philadelphia, PA., 1892. https://archive.org