What's the oldest piece of gear in your system?

This site is here for the buying and selling of Audio equipment. This causes me to wonder if most of us have relatively new equipment. If most of it is new, what is the oldest piece of equipment still in use, and why are you still using it?

My oldest piece is a Sota Star Sapphire, but it has been upgraded. It was originally purchased as a Sapphire in the 80's, but was upgraded to a Star Sapphire about two or three years ago.

What's your story?
Happily received a Yamaha CT 1010 TODAY...grd 9 for the low price of $37.78

replacing a sansui 517
A Kenwood tuner that still works great from the 70s.
My CD player CALIFORNIA AUDIO LABS GENESIS,bought used six months old and still have it 6 years later,and Audioquest Diamond interconnects at the same time 7 years ago.Still blows away better and more newer expensive gear.
Empire TT. 40 years plus as far as I can tell.
1972 Sony 5520 Turntable. Not bad for a 30 year old TT.