Hate to be the messenger of bad news, but what you have must be a cross breed. All Wyandottes have a rose comb. They come in blue laced, Splach, and black laced like all blue breeds they don't breed true. The hen you have posted is a splash, but as you can see she has a straight comb. I ordered 24 of these from a breeder in Kentucky. (Fowley's) and I got 25 sent to me. 20 roosters, and 5 hens! Here's a pic of some of the roosters. You can maybe see the blue's, black's, and splashes.
Blue Rooster and Splash Rooster
Group, but if you enlarge, you will see some of a black on this pic and the one preceeding it.
I raised several more last year, and now have a breeding group of them. They are really cool chickens.