First two coins denomination is correct.
Value of these is about US$10-25, depending on the land you live in.
Here in Belgium you will get about US$15-20 for the first two.
Perhaps you will find your Sikh coin here:
http://www.sikhcoins.com/List4b%20S...27032013.pdfThe third and fourth coins are very similar.
I think these are Akbar Sunnite temple coins
They can be silver, but other metals (bullion) are possible..
Around the square of the coins are the names of the four caliphs:
You can see one of my coin here:
http://www.zeno.ru/showphoto.php?ph...&ppuser=2181The kalimah is an islam verse:
https://en.wikipedia.org/wiki/Six_Kalimasbut only the first is most used on coins.
The date is AH988 = 1580AD, but I doubt if these temple coins are that old.
The date is written as 9M in the middle of the coin.
There are many varieties, even in the names around the square.
If you want to compare with other coins, and prices you should check this:
https://www.google.be/search?q=akba...CvEQ_AUIBigBor this one: (very usefull)
http://indiannumismatics.com/products.php?id=172, but this site mentions 92. That is not correct (should be 9M)
I have paid US$20 for my square coin (in fact a little bit to much)
On some islamic coins you will see the number 92 (written in arabic).
This is actually the numeric presentation of the name of Mohammad:
In Islam, it is not proper that the Muslims touch the name of the prophet with their hands. Therefore, the name of the prophet is represented by the numerical sum:
Mim + Ha + Mim + Dal = 40 + 8 + 40 + 4 = 92
I like indian coin like these!