Watch List notes:

SINKIANG: Ya'qub Beg, 1865-1877, AV tilla (3.52g), Kashgar, AH"12"//"12", Cr-37-3. A-O3090, NS-E16, in the name of the Ottoman sultan 'Abd al-Hamid (1876-1909), pierced and repaired (from having been mounted), dated only "12" because the engraved never completed the date, VF, RRRR, ex Dick Nauta Collection. This type was first published in 1986 by Cüneyt Ölçer (weak photo and drawing, same obverse die), then later in a Baldwin's Islamic Coin Auction #13 in 2007 (illustrated as Zeno-48617, same dies), and another in one of their auctions in 2011, and finally one in our Auction 22 in 2015 (Lot 668, same dies). Assuming they are all different specimens, then this would be the 5th confirmed, though of course there may well be additional examples in Chinese collections.

Estimate: 3,000-4,000 USD