Hi,
Well, I'm not sure what you have but I am sure it is not a Welsummer. My guess is that someone crossed an Ameraucana of some sort with a Welsummer.
The green legs are the dead give away. I will be able to give you a better idea in a few months if that is the case as I am breeding some of my cull Welsummers to all three of my Ameraucana roosters. One Wheaten and two BWs.
God Bless,