Or, if you prefer, Rothphone or Saxorusophone.
I'll mention this, however I'll probably screw it up a few times: it's relatively hard to determine alto or tenor without something to compare it to. I use the G#/C#/B cluster: if there's a lot of distance between that and the top of the bell, it's a tenor. I'd also point you to this picture on Wikipedia.
Also, and no offense to museums, but it's very easy to tell the difference between the Eb baritone and Bb bass.