For the crossing that has the dead E-Bell, I have a bad feeling that a Low-Pitched Siemens Electronic Bell is very likely. In case you didn’t know, Safetran Type 3s stopped production in 2011, with their successor being Invensys Rail Electronic Bells, which were short-lived, as they only lasted from 2011 to 2013. The bases on the Invensys Rail Electronic Bells are also quite small, too, compared to the Safetran Type 3s, which have the longest base out of all of them. Then, in 2013, the Invensys Rail E-Bells were succeeded with Siemens Electronic Bells, which look very similar to the Invensys Rail E-Bells, as their bases are also quite small. What I personally hope for, however, is a General Signals or a WCH E-Bell because those are much more reliable and last quite a long time.