This folio from Walters manuscript W.672 is a sheet of pen exercises (karalama). Such pen exercises were commonly collected in albums. In their technique and design pattern, the borders of this page are comparable to ebru (marbled paper) made by Hatib Mehmed Efendi (died 1187 AH/AD 1773), a celebrated Ottoman artist.
<bdi><a href="https://en.wikipedia.org/wiki/en:Sheikh_Hamdullah" class="extiw" title="w:en:Sheikh Hamdullah"><span title="Ottoman calligrapher">Sheikh Hamdullah</span></a>
</bdi>
10th century AH/AD 16th century-12th century AH/AD 18th century (<a href="https://en.wikipedia.org/wiki/en:Ottoman_Empire" class="extiw" title="w:en:Ottoman Empire"><span title="multiethnic empire with the monarchs from the Ottoman dynasty (1299–1922)">Ottoman Empire</span></a><div style="display: none;">era QS:P2348,Q12560</div>)
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