Thanks for looking. Its certainly possible that its been tossed into another box. We're still finding things where they don't belong. And, there is still the mystery of what happened to an entire box of wine glasses that were in their own box that I am now finding one at a time packed in other things, and chipped and broken. I've documented 91 separate damage issues.
I just got a phone call from someone who thinks he has "one and only one" of these plates. Waiting for verification. I'll let everyone know.