Just got 2 new fire alarms, hopefully more!

Well thanks to the maitenance person at my moms work, I now own 2 Edwards 270-SPO pull stations for a 2 stage system. They both are pretty old, they both have the old Edwards shield logo, and one of them has Fire Alarm written on the top of it, the other does not. The only thing I need for em is the key for the keyswitches. Pics of them to come later. As well as that, I am also getting this 10" unknown fire bell: