This is one cup and saucer from the Bernardaud Premium Line, featuring gold and platinum inlays (encrustation). I've forgotten the exact retail price at the time, but I believe it was around 60,000 to 80,000 yen. Plates with the same design also exist with the B&C backstamp. It is in beautiful condition, but it is not new, so please refrain from purchasing if you are overly concerned about condition.