I recently picked up a German manufactured Ottoman Foot Artillery panoramic sight most likely for the 15cm s.F.H. 1913 or the 15cm. lg.s.F.H. 1913.Also another possible candidate is the 10cm Kanone 1914 but I am not sure if this one made its way to the Ottoman Empire in its last days.
The sight is graduated from 0-5760 (which is the German style Foot Artillery scale from 1893-1916).The odd feature of the sight is that the numbers are in Arabic-Indic Numerals not European old-Arabic Numerals.This is the link for the web page:
Examples of all the guns you listed were captured in Palestine in 1917-18 and are in Australia now. There was a 10cm K14 captured at Hui in 1917 - this gun is in the Army Museum of Western Australia.
Arabic numerals were also used on the 75mm Krupp guns in the 1905 shipment. Oddly the later (and smaller) shipments seem to have retained the Krupp markings so the serial nos and build dates are in Roman numerals.
