A U.K. seatrout pattern. Found it here; they provide links to the tying video.
hook - Maruto 2312 #6
thread - Danville 6/0 black
rib - medium tinsel opal
body - dubbing black
hackle - black
collar - teal flank
underwing - Flashabou pearl
wing - Australian possum dyed black
Regards,
Scott