I think you have an example of Gin Matsuba, but unfortunately the silver on the body is not strong enough, resulting in the Asagi scalation coming through too heavy, and there is yellow/orange pigment on the gill plates (but not enough to elevate it to Kujaku, IMO... debateable point, perhaps). Additionally, the pectorals seem undersized. All of that, combined with the items noted by Jim above, this is a fish to enjoy for the beauty of her moment, but not in the show ring.
These comments are a harsh realism, but there is another aspect to koi appreciation than the judging ring. Prior to the 1960s nishikigoi of this sort did not exist. Just 50 years ago this would have drawn raves as an exciting development ... a leap forward in koi development, a treasure to be coddled. A koi that appeals to your sense of beauty is a worthy fish, without regard to the state of koi development today. So, enjoy her.
