Foustie,
It's part of Ineke's "Floral Curiosities" line that is only being sold at Anthropologie (so there aren't any official samples of them). However,
Briar Rose must have been the most popular one as it sold out, and I don't think they are making more since it was removed from the Anthropologie website. The few remaining bottles in stores were placed on clearance.
But now looking at Ineke's website, I see this message on her Floral Curiosities page:
"Are you looking for Briar Rose? Click here and send us a message." So maybe they have a secret stash?
http://www.ineke.com/floralCuriosities.htm