This poor trackable hasn't been inside of the designated cache in 4½ years.
Wherever it is, the secret code number clearly ended up on a German TB list.
That country is kind of coo-coo for trackables so this is not uncommon.
I truly hope that it turns up one day soon but, in the mean time, it is incredibly overdue for being marked "Missing" so that it will no longer be listed on the cache's inventory (online).