Whats your oldest personal possession

One thing I have that gets used daily is a key ring I got in the mid sixties.
Something else is a McCulloch 2 cycle go cart engine I put on a minibike I built, in '66, made it pretty fast.
Have a Remington .22 pump rifle my dad bought new in the early 50s.
Have lots of old to really old tools, Some I bought new in the early 70s, my grandfather and uncle gave me stuff that dates back to the 30s.
When I got married my wife brought along tools that had been her father's, some very old including a Black & Decker electric drill with patent dates from the 20s and a ratcheting style pipe threader patented in 1896, it looks very much like ones you can buy today and still works great.