https://abudervish.blogspot.com/2010/01/ancinet-coin-review-01-caliph-umar.html
abu dervish: Ancient Coin Review 01 : Sultan Abdullah Haayat Shah - Johore Sultante( 1615-1623CE)
I bought this gold coin of this Johor Sultan in 2006. It costed me a fortune but I am glad I have it finally ( after a few installments...