Oldest gear still for sale is . . .


Some gear seem to last, others, not so much. 

Can anyone think of anything hifi thats been in production longer than the Denon DL-103 cartridge? 55 years and still plugging away! Kennedy was in the White House when he DL-103 first came out- 
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I use some McIntosh MC 60s made in 1960, makes them 57 years. Use them every day. Terry Dewick is my friend.

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The original Quad ESL was an early one (1957), but went out of production for years, then back in. I believe it is again out of production. How 'bout the Klipschorn? What I find interesting is the once-dismissed but now back in fashion designs---the Thorens 124 and Garrard 301.
My first amplifier was the Dynaco ST70 Stereo Tube Amplifier with Cage.  I am guessing its age around 1955 but I really do not remember.   
This thread is about gear that is still in production. Why are all of you listing gear that hasn’t been produced in years? Reread the post!