La ilah illa / Allah wahdahu / la sharik lahu ("There is no God but Allah alone, no partner to him”) // Muhammad / rasūl Allāh / al-Qadir Billah / Mahmud ("Muhammad is the messenger of God, (Caliph) al-Qadir Billah, Mahmud”). 10mm, 0.57 grams. Uncertain mint (Ghazni?). Fishman/Todd "The Silver Damma" #GH7.

Shown from only a single example in Fishman/Todd, rated RRRR.

Ghazna type, issued directly under the Ghaznavid Sultan. The reverse references both Sultan Mahmud and the Abbasid Caliph al-Qadir. Caliph Al-Qadir (r. 991–1031 CE) was the Abbasid caliph in Baghdad during a period when political power was largely held by the Buyid dynasty and later the Ghaznavid Empire. Although his temporal authority was limited, he strengthened the religious prestige of the Abbasid caliphate by promoting Sunni orthodoxy and issuing the influential al-Qadir Creed, a formal statement of Sunni doctrine. 

Mahmud of Ghazni (r. 998–1030 CE) was the most celebrated ruler of the Ghaznavid Empire, transforming it into a major power stretching from Iran and Central Asia to northwestern India. Renowned as both a military commander and patron of learning, he launched numerous campaigns into the Indian subcontinent, greatly expanding his empire and accumulating immense wealth. His court at Ghazni became a flourishing center of Persian culture, attracting scholars such as Ferdowsi and Al-Biruni. Mahmud is remembered as one of the most influential Islamic rulers of the early medieval period and for establishing Ghazni as a leading political and cultural capital.