Iron Cross 2nd class 1939 first pattern clasp by C.E. Juncker

Original 'Wiederholungsspange 1939 zum Eisernen Kreuz 2.' in good condition, first pattern with scalloped sides on the date box, mounted on a WW1 Iron cross ribbon. The four prongs are intact. Possible that this badge has a maker mark on the reverse but I do not wish to damage the ribbon or prongs to find ou. Nice piece executed Buntmetall, attributed to the firm C.E. Juncker, Berlin.