(Feldartillerie-Regiment König Karl (1. Württembergisches) Nr. 13 Schulterklappen). A set of 13th Field Artillery Regiment “König Karl” Leutnant shoulder boards, each constructed of a red wool base with a magnetic metal wire reinforcement, bearing silver aluminum wire tresses with black and red threading, pinned with gilded bronze numerals “13”, the reverse of each with a black wool strap, both unmarked and measuring 25 mm (w) x 126 mm (l), in near extremely fine condition.