The Grandmaster's Palace on Piazza San Giorgio, Valletta, Malta signed 'Brocktorff' (lower left) watercolour over pencil heightened with white 16.5 x 31cm (6 1/2 x 12 3/16in).
<bdi><a href="https://en.wikipedia.org/wiki/en:Charles_Frederick_de_Brocktorff" class="extiw" title="w:en:Charles Frederick de Brocktorff"><span title="German artist and lithographer active in Malta">Charles Frederick de Brocktorff</span></a>
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