Help with a quaddara please

[Marcus]

Here are pictures of coins like those used to dress the rivets. On the topside there are two 20 Kopek coins and one 15 kopek coin. Of course I do not know the dates of the coins on the sword but the basic design was used from about 1860 to 1917. On the back are Iranian 500 dinar coins. I think they are from the reign of Naser al-Din Shah Qajar, (September 1848 to May 1896). His successor was Mozaffar ad-Din Shah Qajar and I show one picture of a 2000 dinar coin from his reign to compare the Persian script with the 500 dinar coin (enlarged). The differences are rather subtle.
It took a while to find the right 500 dinar coin and the one shown was advertised on eBay as having “normal wear”. In fact, what I received was not a coin as much as it was a button! Someone had soldered a loop on the backside!