Property of an Important Private Collection; Sotheby's 27 April 2005, Lot 34 A comparable piece painted by Abd al-Husayn Sani’ Humayun is in the Arthur M. Sackler Gallery, Washington, inv.no.2014.331; in Farhad, McWilliams and Retting, A Collector’s Passion. Ezzat-Malek Soudavar and Persian Lacquer, Washington, 2017, p.139, no.120. A penbox with the kings from the Shahnamah, with the same signature and the same date was sold at Christie’s London, 10 October 2006, lot 144. Another qalamdan signed Abdul Hossein Sani’ Humayun and dated 1320 AH/1902 AD was offered at Chiswick, 29 October 2021, lot 223.