What's the oldest tech device in your possession?

[JuliaL]

Min, I remember on some of these furniture record players, if you selected eg: 45, a round thing comes up so you wouldn't need that little adapter thing.
Is that correct or am I dreaming?

While you may be right that there were some players that automatically raised a 45 RPM adapter from the platter, my experience is that the below photo is much more commonly the case.  That's my Grundig from the '60s.  I don't even know if it has a model number.  It does say 'stereo' on the tuner face which is why I date it to the '60s rather than the '50s.  Generally there was a separate adapter that rode in a clip until needed when it was removed and placed on the center spindle.  For those who haven't seen this tech, there was a catch about 3 inches above the turntable.  You could stack vinyl discs on this step and they would be dropped one by one.  The tone arm moved up/down, in and out in coordination with the dropped discs to play them in turn.  Think the "normal" (play next) play mode on your MP3 player.