coin identification

please help me identify these coins..

1.

2.

3.

ignore the swivel (kunda) in the third coin..some people used to add swivel above the coin so that they can wear it.

1) Probably Shah Alam, Frozen RY19

Thank you for your help.
The design and characters on the coin seems quite similar to shah alam but weight and diameter varies a lot.

the actual weight and diameter of the coin-
Weight: 7gm
dia: 23mm

the Shah Alam coins with similar designs weighs no less than 11.48gm.
4.5 gm difference is lot.
What do you think?

So may be a variation of the half rupee

These coins look too crude to me. Maybe they are jeweler's imitations.

The coins are minted during the rule of ghiasuddin balban(1266-1286),Mohammad bin Tughlaq(1325-1351) or Sabuktgin(900 ce). Mostly Tughlaq .
the third coin is probably not a coin as lettering is too sharp for it to be a coin.

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