Germany, Imperial. A Late First World War Trench Art Shell certificate_of_authenticity and Veteran's Organization Stickpin (aluminum

and Veteran's Organization Stickpin (aluminum with black enamels

measuring 27 mm (w)

some are identified on their lids

Gold and enamels (Gemsenkomf mark on the ring)

each connecting to straps of identical construction with functional bronze spring clips

Germany, Imperial. A Late First World War Trench Art Shell certificate_of_authenticity and Veteran's Organization Stickpin (aluminum(Grabenkunst). A rare late First World War trench art shell, constructed of brass, the outer circumference featuring a hand pounded dimpled background covering approximately three quarters of the surface, bearing a raised biplane with a Luftstreitkrfte Iron Cross clearly visible on the tail, above a U Boat, with stylized clouds dispersed over the skyline, the base stamped with a manufacture date of JULI 1918 and with calibre information indicating