I was doing some research (not on this subject) in the Winchester files at the McCracken Research Library in Cody, WY, a few years ago. I came across some in-house correspondence concerning the order for 1,000 44 center fire 1866 carbines for Brazil. It was mentioned that Brazil wanted these in .44 S&W American, but Winchester did not want to designate this name for the cartridge, so they thought they might call it .44 CF Henry Flat. But more importantly, the order number was mentioned. If you research Winchesters, you know that the letter gives you the order number your gun was shipped on, but there is no longer a record of those order numbers, so they are usually of little interest. Knowing the order number of the Brazil order, I asked Jessie Bennet to find what was shipped on that order. It was a pain, but she agreed to do it. Finally, she found 999 of the Brazilian guns. A couple months later, she found the last one, which was way out of serial number range of the other 999. So, now you can request a search on your serial number, and Jessie can confirm if it was or was not on the order for 1,000 to Brazil. On a visit with some collectors in Buenos Aires, I brought up the subject of what the cartridge boxes on the Brazil order looked like. I was told that even the Brazilian collectors were not sure, but the general opinion was they were pretty much unmarked pasteboard boxes.