[Shell studies]: Six Plates

After Friedrich Heinrich Wilhelm Martini (1729-1778) [Shell studies]: Six Plates six engravings with hand-coloring, mid-18th Century, on laid paper, all with margins all P. approximately 9 x 6¾ in. (229 x 171 mm.) all overall 16¼ x 14½ in. (413 x 368 mm.) (6)