George Tiemann was a major supplier (probably the largest supplier) of surgical instruments to Union forces during the civil war. According to Edmonson American Surgical Instruments his company address was 63 Chathum street from 1855-1863 and 67 Chathum street in 1864-1865. This set has a mahogany case with a lock (key is missing). Kit has a major amputation saw, knives, and needles; tere is also a bullet probe, extractors, etc. The majority of instruments are marked in the old English font of "Tiemann". Excellent.