As nations moved from black powder to smokeless powder and sought to develop workable repeating rifles, it is entirely understandable that any significant company would put produce sample trial rifles for examination/testing by a prospective customer nation. Your rifle looks in every respect to be original as produced. Reticence on the part of some with regard to the originality of your rifle likely stems from the unfortunate faking of rifles by opportunists and frauds who only want to make money by cheating people. There are many very knowledgeable at this site. Hopefully one or more will be able to help you with more information about your rifle. Sincerely. bruce.
" Unlike most conservatives, libs have no problem exploiting dead children and dancing on their graves."