Ben Seibel (say it "sy-BELL") is a designer of pottery and dinnerware have made his work highly collectable. His work can be described as "retro" in 2001 parlance, but at the time of his work (from 1950s through the 1970s in the United States and Europe), he was considered ahead of his time.
His signature works are pottery and dinnerware with bold, bright designs -- very busy patterns with many flowers, leaves and geometric shapes. His work is in contrast with the mainstream designers of his time. They were going for an elegant, refined look in their work, while Seibel seemed to be going for bright and bold. He used bright yellows and avocado greens.