Help! German Silverware

[Lisa Mills]

I need some help. Six years ago in Denver, Colorado I bought a set of Silver at an estate. The man who had died brought it back from Germany at the end of WWII and said that it was German officer's silver flatware. The family was ashamed he had "stole" it and never used it. Because it is stamped "Henckel" on each peice, I contacted Macy's in New York to get help. The lady said they never made silver flatware, then called me two days later apologizing. She had called someone in Germany and confirmed Henckel made silver flatware for the German Army. That was all she knew. I was told by a man involved in WWII militaria that it was worth about $1000.00 but he didn't know for sure because he didn't know anything about flatware.
Each peice is stamped either "Nicht Rostend" or "Friodur" on the blade, the Henckel name, the number "90" and a Henckel twin mark which resembles a swastika is on the handle of each peice. Can anyone help me determine a real value or history? I have learned recently that alot of soldiers "stole" Third Reich items and brought back to the states, so the story I was told rings truer to me now than it did back then. I was able to locate a similar gravy ladle on a website of Third Reich items, but I have not been able to locate flatware like this anywhere else. Thank you for any help!