Found this piece of history when I got off route (left) leading the second pitch of Triple Overhangs. It may be one of the pitons that bsmoot commented about on the main page.

I considered clipping the piton but it pulled right out. After traversing back to the right I found the belay ledge below the Triple Overhangs themselves.

Looks a lot like these old pitons.

dude you need to stop using these

Nice find!