Iron Blue Dun
Tied By Christian Andrews
Hook: #8 sproat (blind and knelled)
Thread: claret silk (or red silk with dark lacquered head)
Body Parts: tag, abdomen, body, hackle, wings
Materials: gold, dark dun barbs, gray dubbing, light blue dun soft rooster, dark dun quill slips
Notes:
from Favorite Flies and Their Histories (1892) by Mary Orvis Marbury
https://flyvault.net/wp-content/uploads/formidable/13/MOMironbluedun-150×150.jpg