Took forever but resolved. My bldg security manager let me know only one of our 30 tenants use a courier. I checked with them, they remembered seeing the package, and they vaguely recalled dumping it back in a mailbox somewhere (um, thanks, I'm just a 20 second elevator trip away!).
For whatever reason, the Post Office neither attempted delivery, attempted return to sender, or updated tracking. Fortunately my latter carrier was willing to hunt around and eventually found it.
And my card display now gas 1934s of Frisch and Cochrane in its top row.
