My South Brazilians tend to produce these "patternless" types. Other folks have proven out some full center stripe animals. Tim Belknap suggested that these guys have a "freak gene". I wish I had pictures of his 97 litter, there was some really bizarre stuff in that one. It wouldn't surprise me if the south Brazilians produced the first Lucy. Here's a few more animals in addition to the bunch that I posted below. Hope all is well with you, and have a great 4th!
This pic is part of an 04 litter, from a thin saddled female and reduced pattern male:





The next two are Bolivians (the mother has thin saddles, the male wider saddles):



