Ooh, that hurts. But, keep up the faith.
Here's my anecdote of losing my Large Regular 1999 BG-42 Sebenza a few years ago...
So I was up in Denmark with family for my mother's 70th birthday, on the beautiful west coast, a little resort town by the name of Henne Strand, and we were staying at one of the two hotels (it's mostly vacation homes for rent there) and I had been carrying the Sebenza in the belt case at the small of my back all week long when not in use - in 'horizontal' carry mode - and then on the day we left I was packing stuff into the back of the car. That's where it happened (obviously unnoticed by myself) - the snap must've snagged on my jacket when I bent over at the back of the car, and the Sebenza must've dropped out on the pebble parking area without my noticing.
Some time later we made a stop in Ribe - the oldest town of Denmark, and the cathedral is not to be missed - to catch the sights, and at some point my hand went back to the Sebenza...which wasn't there anymore! Uh-oh! Searched the car, did some back-tracking where we walked...nothing. I hate to say that I was thoroughly bummed out then (it's only a knife, but it was my EDC for over ten years, dammit!).
Anyway, after a somewhat taciturn drive, we eventually got back to my mother's home in Kiel (Germany), and on the off-chance I later in the evening - having fortified myself with a pilsener or two - decided to call the hotel...described the Sebenza, and....yes! Someone had found it right outside and turned it in! I can still feel that palpable moment of relief recalling the incident right now. Against protestations, I sent them a finder's fee and postage costs, and 'we' have been reunited ever since. (No more horizontal carrying in that case, ever (not that it's a bad case as such)). Kudos to the honest Dane.
My point being, there are some honest people out there, and your Sebenza might be returned to you yet. Best of luck!