Cary 1973 I have a store bought buff orpington, bought 5 and 0ne turned out looking almost just like yours!! I am gonna go home and take a pictureI wil post it on here tomorrow. Shes a tad bit of a redder gold and not so much of "lacing on the colored feathers but shes white toward her tail and saddle area too!
Your gal is a cutie!
I have two exactly like this. I got them from Ideal Poultry as part of a Rare Breed Special. Nobody has been able to identify her either. Think I will send a photo to Jennifer at Ideal and see if they can help.