As promised, the Hagen-Renaker Zara in custom overglazed dark dappled grey is now listed at auction on the MyAuctionBarn site. It is a 3-day auction and the starting price is $595.00.
Here is the link to the auction.
(Note: sometimes with MAB you have to come back here and click the link again to get it to work.)
Many thanks for your interest and good luck if you are bidding!