OK, this one has a story ---I picked it up back on 10/23/16 from the "Gateway to Mystery No.2" cache (GC6MG3V), which showed no inventory for it. A look at its page showed it had been brought to a nearby event recently, though, but its track stopped there. Anyway, because of this --and 10 other things putting it out of mind later on -- I forgot to log it till now, when I intended to drop it off in another cache!