Thread by @varendrapill

Thread of historically verified flags and insignia of Muslim Bengal

Starting in chronological order we have the flag found in the Libro del Conosçimiento de todos los rregnos or Book of Knowledge of All Kingdoms, dated to the late 1300s, meaning this flag was contemporary with the Ilyas Shahi.

Another depiction from the late 1300s is the flag shown in the Catalan Altas World Map. The symbol of the lion bares a striking resemblance to the lion symbols used on the coins of Jalaluddin Muhammad Shah.

Personal standard of the Nawabs of Bengal, according to a 19th century British painting.

Flag of the Nawabs of Bengal according to "A general view of the flags which most nations bear at sea", a book by Alexander Justice in 1757.

Thanks to @boongali for bringing these to my attention.