This is a follow-up to my post last November https://www.febo.com/pipermail/volt-nuts/2015-November/004562.html I was able to track down the manufacturer of the keyswitch. It appears that Lorlin is the manufacturer and the key number is the same. With the help of another member I was able to confirm that replacement keys work in my one good switch and also his spare switch. It also helped that there is an auction that showed the key number. The keys and switches were sourced from Allied. http://www.alliedelec.com/lorlin-key850/70749334/ http://www.alliedelec.com/lorlin-srl5ds2850/70749350/ I won't install the switch for a few weeks but they appear to be similar other than the shape of the metal surrounding the lock The new lock bezels are tapered. Todd