Safetran type 2/NEG E-Bell with WCH Gen 2 type 1.5 speaker.
Posted: Mon Jan 22, 2018 3:11 am
This might've been posted before, but it was really odd hearing this! 
Yea, that looks like a General Signals e-bell. If a maintainer knows what they're doing, they can replace a dead sound card in a bell with a brand new one that still works. Here's a couple of other examples:
A WCH e-bell with a GS Type 1 Sound Card in it:
A WCH e-bell with a GS Type 2 Sound Card in it:
Both were done by owensri2 on YouTube, who used to be active on this forum under the same name.