Second weight standard, used 1507-1510. 25mm, 5.17 grams. Herat mint. Album Islamic# 2978.2; Zeno cat# 22029; Numista 312021.

The increase in a currency weight standard was so unusual that contemporary chroniclers saw fit to praise Muhammad Shaybani for his generosity. 

Muhammad Shaybani Khan (c. 1451 – 2 December 1510) was an Uzbek leader who consolidated various Uzbek tribes and laid the foundations for their ascendance in Transoxiana and the establishment of the Khanate of Bukhara. He was a Shaybanid or descendant of Shiban (or Shayban), the fifth son of Jochi, Genghis Khan's eldest son.