This is a single shoulder strap for an enlisted man/NCO from Pionier-Battalion Nr 11, a Prussian unit formally known as Kurhessisches Pionier-Battalion Nr 11. It was garrisoned at Hann.-Münden (Hannoversch-Münden). It was founded in 1842 and assigned to the XI. Armeekorps. The red shoulder strap measures 2″ x 4 ½.” The battalion number is embroidered in yellow on the obverse. Soiling is evident on both the obverse and reverse.