I will have to buy the guns to get you any more information than I already posted. I had no idea there would be this much interest. Price is not for the faint hearted. Did I notice a comment about marking on the extractor, kind of tough on a 1900 style, where would such a marking be??????? Or is this in relation to the 06??????? The key aspect is the comments to me about the wording on the top of the barrels which I am familiar with. These guns along with several other oddities are from a group whose owner spent considerable time in South America many years ago. I had really hoped to get some input on how to determine authenticity. I guess that would require more description?????????