Dear Pavel55...hate to tell you this but "original" Stoeger lugers are generally more valuable and pricey than unmarked commercial or military lugers. Of course, we need to see pictures of this piece in question. Many of the Stoeger lugers have the phrase "Genuine Luger" stamped on the right side of the frame, so they are certainly the "geniune" article. Much information on these imports is available in the books, especially those by Jan Still. The A.F. Stoeger Company was a famous sporting goods and gun store in New York City that imported dedicated lugers both in the 1920's and 1930's (As did Abercrombie and Fitch). The price range of Stoeger lugers can be from a "low" of $2500 to over $9000. These prices have been actually realized in recent auctions. Hope to hear more about your Stoeger.