30 Khumsiyyah - Saleh 'Ubayd bin 'Abdāt

Al-Ghurfah was a tribal confederacy in the Hadhramaut region of what is now Yemen, operating with enough commercial autonomy in the 1920s to strike its own silver coinage for local trade. The khumsiyyah denomination — literally a "fifth" — functioned within a fractional system tied to the Maria Theresa thaler, which dominated Arabian Peninsula commerce long after European powers had abandoned it elsewhere.

Saleh 'Ubayd bin 'Abdāt was a prominent Hadhrami merchant-chief whose name on the coinage reflects the personal authority backing the issue rather than any formal state apparatus.