1870's Jacob Teufel Surgical Set

Jacob Teufel ran a small instrument company which produced dental and surgical instruments in Philadelphia, Pa. during (1856-1900).  His address was listed as being at 103 S. 8th during the Civil War (1860 to 1882).  All dates are from the Directory of Makers and Dealers as listed by Edmonson in American Surgical Instruments: an Illustrated History:

Jacob J.Teufel; Jacob J. Teufel & Bro., 1857-1900

Jacob J. Teufel cutler

1857: 37 S. 8th

1858-59: 39 S. 8th

1860-82: 103 S. 8th surgical instruments (in association with George W. Teufel after 1879)

During the Civil War Teufel was one of several Philadelphia makers awarded contracts to supply the Union troops with standardized surgical sets.  This particular set is not Civil War issue.  It displays the straight plated blade on the large knives which indicates a later style.  The keyed lock is center mounted and the cartouche is inscribed for the owner.

Note the blued prongs and frame as well as the shape of the T.  These are important features to note for dating tourniquets.  The tourniquet is not marked for the maker.  Sometimes people switch this kind of item between sets and knowing the correct features is a way to detect this problem.  The only way to be fairly sure the item is not replaced or switched is to know its history and origin.  If the item has been in the hands of a less than reputable dealer...all bets are off unless you have a known comparison or the knowledge to know the difference.