fount it 2 times in the ancient treasure. and one from a grimtotem maurodeur. still drops in 6.0.3.
This rare-quality tailoring pattern should be epic-quality, considering the extremely low world drop rate. Expect to pay several thousand gold to purchase it if the player knows what he or she has in their possession. In all my years of playing World of Warcraft (7+ years and counting!), I have seen it listed on my realm AH only once - and I bought it at 4K gold, early/mid Wrath of the Lich King.