Nice fly as usual and nice selection of pattern. As you know I have a lot of these old classics, the Black Fairy is one which I have many examples. It was one of the four favorite patterns of the original owner of the collection which I own. Here are some examples of the pattern placed on the reference page for this pattern in the Hardy’s Salmon Flies Book.
I have also included a sketch I did recently just with colored pencils of a Black Fairy. I placed on the sketch three examples of this type of fly Fairy (has a yellow butt), Black Fairy, and the Brown Fairy. I would think the Brown Fairy would Fish well for the steelheaders similar to an October Caddis.