Andrew,

Thanks again for your comments, they are very helpful. In regards to the "Roselle" pattern being produced through to about 1917 - how was it determined that the actual pattern was made until then (back mark styles, other attributes..)? Also, in regards to the copper plates, is there any evidence that named patterns that utilized different central designs (ie. "Bologna" by Adams, "Palestine" by Adams, "Sydenham" by Clementson, "Columbia" by Adams, "Seasons", etc) would have fetched a premium price in the 19th century over printed patterns that had the same central design on each piece in a set?

Thanks again.