I wonder if it's one of those Limelights with a Fender logo?
I can just about imagine a situation where, for whatever reason, the shipping information goes awol and ,after checking the headstock, the undeliverable bass is recorded as a Fender on whatever database they use for such things.
When the Limelight is reported missing they check the database and come back saying the only undelivered bass we have is a Fender,
Then because no one has reported a Fender bass missing they have no idea where the one they have came from and it ends up at the auction
Just a thought.
Edit.
The final step would be the auction house correctly identifying it but not telling the courrier company, and so the circle of f-ups is complete.