Well for all you S&W collectors out there this is a very rare find , from my research it is a 3 diget serial number and makes it one of the early ones made for the british for world war 1. It is chambered in 455 webley as you see it is in very good condition for the age being over 100 yrs old from what I can tell.Will make a great safe queen to add to your collection open to serious offers.