Sultan Pungeran al-adil ("the Just sultan Pangeran") / Blank. 19 mm, 1.99 grams. Robinson Type 19; cf. Zeno 94587.

Pangeran al-Patah (also known as Jin Bun or Raden Patah) was the founder of Demak Sultanate. Ascending to the throne in 1475, he remained a vassal of the Majapahit Empire until 1478. 

The Demak Sultanate was Javanese Muslim state located on Java's north coast in Indonesia, at the site of the present day city of Demak. Foundation of Demak is traditionally attributed to Raden Patah, also known as Pangeran al-Patah or al-Fatah (1475-1518), a Javanese nobility related to Majapahit royalty.  The Sultanate lasted from about 1478 to 1548. Despite its short duration, the sultanate played an important role in the establishment of Islam in Indonesia, especially on Java and neighboring area.