This series is produced by Knorr with some Illustrations drawn by Christian Leinberger.  All prints are copperplate engravings on hand made chain laid paper.  Published circa 1764 this LARGE PAPER EDITION is highly sought after and extremely RARE.  All color work is Original and prints have been scanned so you do not see the edges of the paper for they are larger than 12" x 17"(scan size).  You may request more photographs of these images.