I still have a Creed 444 teleprinter here that is operational (aka Post office type 15) although there aren't too many people to talk to these days! Ed
Can't help you there, I'm afraid, Ed. The last time I sent a telex would have been from Nigeria in 1984.
But (and on the other hand), people tell me that telex is still used in certain types of secure (maritime, financial, maybe) international communications. As you know, you actually get an acknowledgement that your message has been received.
Someone once told me that the Russians still used Speccy clones to run their nuclear power stations (or whatever), but I had no idea there were so many!
Maybe they just got fed up with mail order stuff that never arrived, out-of-box failures, or some such thing.
There's a definite autumnal nip in the air this evening (here in my part of the UK, at least) ... so with those long winter evenings just around the corner (and if you have a reasonable internet connection), why not plan to take a look at some of this good stuff?