British india Coin identification

Hi.

I am posting the images of four coin which I have purchased from trusted sellers after looking at their catalog.

I need a second opinion on these coins from the expert so that I can further enhance my knowledge

https://en.numista.com/catalogue/pieces2470.html
That is the first coin - of five, not four.
What did you want to know?
The third coins looks ex-mount, as in the past made into jewelry.

What specifics are you looking for in these coins? 'The Standard Guide to South Asian Coins and Paper Money since 1556 AD' by Colin R Bruce II and others is good reference to start with.
Other references 'Standard Catalog of World Coins 1801-1900 &1901-2000' and 'Indian Coinage British India - Republic India (1835-2016) with Market Estimates: Complete Catalogue on Coinage During British Raj in India and Post Independence Coins of India' by Sainath Reddappa