Gregor Huettner atm card is not needed.. why do you say this? Just have the bank letter that states the account is yours, and what amount was in it at the time of the letter being written, together with the bank book and copies of the last few months from that book. (
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months depending on what kind of extension)..
Not all accounts have an atm card, and I have personally never heard of anyone anywhere having to use an atm card to prove a bank statement for immigration.