Can you see the dads ped? ask the breeder if they can get you a copy then you can at least see that half of it , if the mom isnt registered you cant know the full picture. I can see the picture now very cute pup you have.
If you can get a copy of the Sire's ped you can study oneside. Was the mother Regitered? If not you will never know what he is on the bottom half..IF they are both UKC registered you could ask to get your boy a ped or simply ask the breeder for copies of both peds. I donot get why Breeders donot register their litters...baffles me really.