EK2 Iron Cross / Eisernes Kreuz Steinhauer & Lück PKZ & LDO double marked mark 4- L/16

EK2 S&L this the manufacturer’s PKZ numbers was 4 and was  LDO  /L/16/ numbers  , but on the piece have so called double marked mark /4 & L/16 / PKZ & LDO number too in mint condition
this piece is very very not easy to find