An impressive WWI period Prussian Cuirassier officer’s helmet with added Guard parade eagle

An impressive WWI period Prussian Cuirassier officer’s helmet with added Guard parade eagle, the skull of nickel plated steel with brass domed rivets and rims and with ribbed peak, and deeply stamped around the spike mount “575 14”, with brass line eagle badge secured by 2 bolts, white metal chinscales with traces of brass or gilt finish and brass trefoil ends, and large officer’s pattern national and state rosettes, the peak and neck guard lined with leather and with leather sweat band (no other lining present), the Guard parade eagle added at a later date. GC (some flaking to nickel plating, minor dents to skull). Plate 2