Mid 15th century depictions of Ottomans

[Druzhina]

Scenes with courtiers portrayed as 15th century Ottomans from Küllüyat-i Katibi
Eyüp and Salman come before the Sultan in Küllüyat-i Katibi

Could this be the earliest representation of the Janissaries' sleeve type hat (Börk)?
Also mentioned is A scene with a couple portrayed as 15th century Ottomans, from Dilsuznamah (Book of Compassion), 1455-56 AD

MIRROR SITE
Scenes with courtiers portrayed as 15th century Ottomans from Küllüyat-i Katibi

Druzhina
Illustrations of Ottoman Costume & Soldiers

[Duke Speedy of Leighton]

Nice