Yes, definitely a railroad bell. But such bells seem to have been made by the brass foundries associated with locomotive manufacturers, not by the foundries that produced tower bells. So the bell won’t carry any identifying information, or at most it will have something like the part number assigned by the locomotive manufacturer.
That’s great! I really would like to learn the history behind it. I come from a RR family and each one of us grandkids got a bell when my grandfather died a few years ago. I think there was 5 or six bells all together that my great uncle had. When I get a chance I want to carefully look it over for any markings. Thanks!