Germany, Kriegsmarine. A Feldpost Stamp by Stempel-Kaiser

(Kriegsmarine Stempel). A Kriegsmarine Feldpost stamp, constructed of a magnetic metal insignia consisting of a central Wehrmacht eagle clutching a wreathed mobile swastika, circumscribed by an inscription of “KRIEGSMARINE DIENSTSTELLE FELDPOSTNUMMER 24888”, the detachable head connecting to a wooden knob with a maker’s label of “STEMPEL-KAISER, BERLIN S.W.”, measuring 110 mm in height, in near extremely fine condition.