Are you buying or selling? If you're selling, I suggest you sell it privately. The Chiberta is hothothot on the market and if you price it fairly, you'll have no problem moving it.
If you're looking to buy, I'd call Fine Used Saddles and High End Used Saddles (possibly also Used Devoucoux, CWD Used Sellier, etc.) so that they're aware of your interest. The Chiberta is so hot that it's often sold and gone before it ever hits the consignment dealer's web site.
Chiberta buyers also benefit from being crafty, looking on things like the whole nation's Craigslist listings (try searchtempest.com), Ebay, tacktrader.com, basically all the places that don't index into Google.
i strongly suggest you contact the devoucoux rep for your area and see what they have available. they have a bunch of used saddles that may or may not be listed online. they do not charge anything to come out and will bring a truckload of new/used saddles for you to try!