Original Pre-WWI Imperial German Prussian Army Enlisted Dunkelblau Tunic from the 171st Regiment 6th Company.

The yellow chain-stitch embroidered number 171 on the red shoulder strap indicates this tunic belonged to the 2. Ober-Elsässisches Infanterie-Regiment Nr. 171 (2nd Upper Alsatian Infantry Regiment No. 171). The regiment was formed in the late 19th century and was garrisoned in Colmar in Alsace, operating under the XV Army Corps of the Imperial German Army. The red shoulder boards, red collar, and the white Brandenburg-style cuffs shown in your first image perfectly match the specific color layout designated for this regiment.

Tunic is in excellent condition overall with little wear or use visible. Very minor mothing seen on edges. Original tags not found. Exact size not known.