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Portrait of Charlotte Bertie, née Warren, 4th Countess of Abingdon, 1778

graphite and wash on laid paper, Sheet: 8.50 x 7.50 cm (3 5/16 x 2 15/16 inches); Unframed: 5.80 x 4.80 cm (2 1/4 x 1 7/8 inches). The Edward B. Greene Collection 1941.572