I have a small collection consisting of 5 devices for now.
Notification Appliances
Edwards 333D Adaptabel, 6" gong (1)
An unbranded 24vdc 6" bell from Amazon (1)
Initiating Devices
Edwards 270-GAO (2)
Mircom MS-401 (1)
I got the Edwards devices the other day from a retired firefighter who saved them from an old hospital.
I’ll try to get some photos of them soon.