This is a pair of Grenadier-Regiment Kronprinz (1. Ostpreuß.) Nr 1 Oberleutnant’s shoulder boards. The elite regiment was founded in 1655. It was garrisoned at Königsberg I. Pr., where it was attached to the I. Armeekorps. These shoulder boards bear an Oberleutnant’s single pip, along with the regimental designation “1.” Their reverses have a white underlay. Of the slip-on variety, they remain in very fine condition.