Please Help Identify Timurid Silver Tanka, 4.09g

Not much to go on here. The reverse is the Sunni Kalima with the names of the Rashidun in margin segments around. Identifying Islamic coins by "look" or by design elements can be a dangerous proposition. Sometimes the weight standard is helpful when the inscriptions can't be read. 4.1g is too light for a shahrukhi tanka but some lighter tankas of other rulers fall in the 4.1g range. Standards varied by both time and place. The weight is also close to the 6-dirham or 'dinar' standard of the Ilkhan period.

Seems reasonable. The words at the bottom of the obverse may be the mint. The date would be in the margin.

On the two Shaykh Kabir examples at Zeno, the mint name is at the top. I'm not sure what yours reads but you clearly have a trend with the lot.