Your oldest gear?

I have a circa 1987 front end as one of my systems. All British and from the same period separately bought over the last five years.

Logic DM101 Mk2 electronic turntable.

Syrinx Ipsissima PU3 arm, recently rewired by Audio Origami.

Goldring G900IGC cartridge, + NOS stylus.

All three are top examples of a typical set up of well engineered matched components. I managed to restore the deck back to its former glory after years of neglect. A total outlay just over 💰1,000 (excluding stylus)
 

10 years back l also had a wise buy. I purchased a pair of Acoustic Energy AE1 MK1 speakers manufactured in the late 80s. A real steal at a quarter of the price when new, plus with the lead filled iron pedestals designed specifically for that model. Still sounding outstanding in near mint original condition. 
 

Something to be said for buying used gear and except for the arm rewire all unmodified. Still reliable nearly 40 years on

I have a Thorens TD124 turntable, with an SME arm, purchased by the original owner in or about 1962. The original owner was a friend and I bought the table and arm from the original owners’ daughter after he passed away. The table had been unused in years, but in my home, it’s now in regular use. 

An Altec 846A Valencia system is the oldest but they have been completely reworked by professionals. I have not however owned them the longest. My Luxman 441 is the component I've owned the longest at 22yrs. It's a lot older than that but that's how long I've had it. Exceptional TT mated w/Micro Seiki arm. I love older gear and nothing beats playing vintage & classic components with newer streamers/DACs and other. Just my experience. 

I still have my CEC TL1x that I bought new in 1992. I still use it when i want to play CD's. 

JM Labs Mezzo Utopia(and Sub Utopia) speakers from 2008. So 17 years. 

JM Labs was using Focal drivers but black oxide Titanium tweeters for the Utopia line then and not Beryllium tweeters which I am happy to say.