I need to undeerstand how to find out from which blocks come coins that are currently stored at somee adress.Will be pleased to hear any suggestions.
You want the history of ether transfers from and to an account. That feature is not provided by regular clients like geth or parity.
You have to use a block indexer that will read the blockchain and store the result in a database.
If you were targeting ERC20 it is possible by tracking
Transfer events. Unfortunately there's no events for ether transfers.