This is a single shoulder strap for an enlisted man/NCO from the Grand Duchy of Baden’s 1. Badisches Leib-Grenadier-Regiment Nr 109. This regiment was the most important one in Baden’s military. As Grand Duchies, Baden and Hesse-Darmstadt were Imperial Germany’s two biggest military contributors after its four main Kingdoms of Prussia, Saxony, Bavaria, and Württemberg. The regiment was founded in 1803 and garrisoned in Baden’s capital city, Karlsruhe. It was attached to the XIV. Armeekorps.
The shoulder strap appears on page 114 of Under Arms for the Kaiser: Shoulder Insignia of the German Army’s Regiments 1871-1918, by Michael A. Kelso. The strap measures 2 ” x 6 ½.” Its background is black with white trim around the edges. An embroidered red crown appears in its center. The strap’s reverse is also black. Its overall condition is excellent.
This was one of the Imperial German Army’s premiere regiments. Being featured in this excellent reference book certainly enhances its value!