Porta Nigra, Porta-Nigra-Platz, Trier, Germany
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Inscribed in graphite, on back, upper centre: "Powell / Laua(?) beige / gold / 11 x 16 portrait"; on back, centre: "Joshua Cristall OWCS. | 1767-1847 | R W. S. 1816 + 1819 and again 1821 to 183[remainder cropped off] | Same artist who suffers in public estimation | [portion cropped off] fact that he is represented in public galleries | [portion cropped off] laboured and highly finished work | [portion cropped off] far less aesthetically satisfying than | [portion cropped off] sketches"; on back, lower centre: "Iolo A. Williams | "Early English Watercolours" | page 219".
Credit Line: Yale Center for British Art, Paul Mellon Collection
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