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?
i have a pioneer tx9500 tuner that still works flawlessly and sounds wonderful,the VU meters are a plus.bought in the early 1970's
I have a Sansui AU-717 amp and TU-717 tuner from the late 70's. The amp is now on a passive sub and the tuner is not in use. Most of my system is old because I am poor.

I think with excpetion of the cd player and cables, it is all older than me.

My oldest piece of gear is a Nakamichi LX-5 3-head stereo cassette deck circa 1982. And Antmo, I too had a Pioneer TX-9500II stereo tuner which my parents now have and still use. It is a great sounding tuner.