ESPINGARDA PORTUGUEZA XX MOD 1904 DEUTSCHE WAFFEN-UND MUNITIONSFABRIKEN BERLIN. Well that's what is says on the side of the 2 rifles I just walked through the door with..... all numbers matching on bolt. safety, etc.... The XX before the MOD 1904, is an overstrike maybe it is a 55? Very Good bores on both but one is a little better than the other.. chambered in 8X57.