&quot;Charlotte, Queen of Great Britain,&quot; one in a pair of 18th Century English colored mezzotints called &quot;The Royal Couple.&quot; Jeremiah Meyer, Pinxit (1735-1789). Richard Houston, Sculpt (1721-1775). Offered by Georgian Manor as part of the Philadelphia Antiques &amp; Art Show, April 21-23, 2017 at The Navy Yard, Philadelphia PA. philadelphiaantiquesandartshow.com.