I know this blend is hard to find, but Hilands has it in stock. Just FYI, I'm in no way affiliated, but have done business with them in the past. I just bought a few tins.
http://www.hilandscigars.com/bulk-pipe-tobacco/english-blends/balkan-sobranie-pipe-tobacco.html
http://www.hilandscigars.com/bulk-pipe-tobacco/english-blends/balkan-sobranie-pipe-tobacco.html