I'm going to mark this geocoin as "missing."
The most recent holder, MrJoeVogel, hasn't logged into geocaching.com since 2011, and last found a geocache in 2014. I'm not entirely sure how this is possible, but these are the facts as of 2 February 2019.
If this trackable item should re-enter the game, that would be something quite fun indeed, Seattle or no! Until then...