Help needed, 4 coins [επιλυμένο]

Please help me identify these 4 old coins. I really appreciate the expertise of members.

1. 3.6g, 22.89 mm widest, 1.4 mm thick

2. 2.72g, 18.04 mm diam, 0.94 mm thick

3. 3.53g, 13.85 mm diam, 3.06 mm thick

4. 3.89g, 19.77 mm diam, 1.7 mm thick

Any comments welcome. Thanks!

Will

Hi,

Coin - 3: https://en.numista.com/catalogue/pieces30305.html

Coin - 4: https://en.numista.com/catalogue/pieces17565.html VS 1966

Thank you for your prompt and helpful reply, Sujit. I already had 2 other dates of the Junagadh, don't know why I didn't recognize number 4.
I think number 3 matches http://www.ebay.in/itm/Delhi-Sultanate-Alaaldin-Muhammad-Shah-II-AH-695-715-Copper-coin-Gani-/131801616200?hash=item1eaffd0f48 as mine seems to be copper and not silver.

Will

1 & 2
Islamic states (Ayyubid dynasty)

1 - Fals - al-Zahir Ghazi - 1186-1216 AD Eight-pointed star type - Aleppo
date 612 AH (1216)
https://en.numista.com/catalogue/pieces80887.html

2 - ½ Dirham - al-Zahir Ghazi - 1186-1216 AD Six-pointed star type - Aleppo
date 600 AH (1204)
https://en.numista.com/catalogue/pieces84944.html

Coin - 3 is actually Billon, With negligible amount of silver. That is the reason for the color.

Thanks very much simoneo80 and sujit. I was at a loss where to look for them.

Will