COENTGEN, H. after Johann Merken (active c.1782-85):

Liber Artificiosus, seven plates from Part 2, a series of 28 prints depicting architectural orders

Etchings printed on slightly verdâtre paper, plates 48-9 and 51-55,  published in Elberfeld in 1782. Berlin Katalog 4925

Fine impressions with margins all round. These with finger-prints and handling stains, showing the extensive use to which this set  was put. Approx. 325 x 216mm.
$600