Steve: you have a 00 grade gun made in 1905 with a 3 position safety. The SB&Co is the barrel maker. You can find out alot more about your gun on the Shotguns, FAQ, and Photo Trails on the Home Page. Could you post an ultra close up pic of the 'sideways T' on the brls? or send it by jpg attachment to revdoc2@coxnet. Thanks.