Posted 3 months ago
Ottoman Empire Mehmed V 500 kurush gold coin: 1327 Hijri (1910) reign year 4, Istanbul mint, gold .917, weight 36.08 g.
Countermark looks like combination of numbers and letters.
There are well known re - strikes of Ottoman gold coins of lower fineness (18K instead of 22 K), but they are usually without countermarks.
Thanks for helping.