Hi aacoins and welcome to the forum. The coin on the left is probably an Islamic issue, or possibly from one of the Indian Princely States. A look at the other side might very well help pinpoint what it is. On the right you have the reverse of an Imperial Russian 15 Kopeks, 2.6994g of .500 silver with a reeded edge, listed as Y#21a.3 in the Standard Catalog of World Coins. 59,333,000 were minted at Petrograd/Leningrad/St. Petersburg, without a mint mark, but with the BC mark of Mintmaster Victor Smirnov. It's listed at $1 F, $2 VF, $3 XF, and $12 Unc. The picture looks like a VF or better, but a look at the two-headed eagle on the obverse would be necessary to make even an educated guess at the grade.
