Jalal al-dunya wa'l din abu'l muzaffar mohammed shah al-sultan / Nasir amir al-muminin ghawth al-Islam wa'l muslimin khallada mulkahu within a square, mint and date in margins. Firuzabad mint, dated to 822 AH / 1428 AD. 29mm, 10.8 grams.  "The coins of Indian Sultanates" #B331.