I tried to get one before I settled for the GWP but looking at your picture my GWP looks like a litter mate with the same coat and facial furnishings. He is also a lot calmer and easier to live with than most reports of his breed and has never really ranged very far. I'll try and get a picture in daylight and post it , his pedigree says he's got Trudvang, Kimmax, Germanus and Bryantscroft throughout his pedigree. Don't know if any of these lines were used in creating the Korthals which is a relatively new breed but he looks very similar. But wouldn't change him he's a great all round dog but papers say he's a GWP. There was a waiting list for the breeder she was only taking a litter every year or so and the next litter were booked and I needed a pup ............ Not the best picture and he was stripped a few weeks ago . I'll try get the breeders details looked out .