Pronunciation is right... spelling is wrong!
The dog was probably a Biewer Yorkshire Terrier ala Pom Pon. That's the German name -- but most people call them Biewers. Pronounced "Beaver" with an added german accent...
They are not a mixed breed -- but a product of breeding two traditional yorkies who carried a recessive piebald gene. They began developing them about 22/23 years ago, and worked to develop a standard. They must have white legs, white chest and belly. The tail is not docked, and the tip of the tail has to be white. The face is tri-colored (black (or blue), white and tan) and must have good symetry. The back can be any combination of two colors (black or blue and white) You can find info on them by googling "Biewer" or there are also several clubs. One you might want to check out is bytnc.org. As it is a newly imported breed here to the US, there is also a bunch of controversy attached to it. Many "greeders" jumped on the bandwagon and are breeding for the $$$$ and calling them "rare" yorkies. There are some breeders who are breeding with ethics, and you can find reasonably priced dogs that have been bred to the standard -- not just because someone has a male and female and has dollar signs in their eyes! The breed is not AKC or YTCA accepted, and it may never be. Time will tell.
Sorry... didn't mean to write a novel... just wanted to share the info and love that I have for this breed! By the way -- I am NOT a breeder -- I have a traditional yorkshire terrier, and a 9 month old Biewer girl...