This is sent by a seller. I don't have it in hand. So cannot detail the weight and diameter. Please let me know if it's genuine and rarity. Thanks in advance

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Obv - Kalima in square and the legend is
bi- sadiq abi bakr wa ' adl ' omar
Bi - azzam Othman wa ilm ali
by the trust of abu bakr and the justice of Umar
By the modesty of Othman and the wisdom of ali .
Reverse - baadshah ghazi shah jahan and margin part is sahib al din muhammad shahibe qiran e sani zarb junagarh
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