Opened my first bank account in 1970, using a card and pasted with stamps. The kids of that time were taught to save even in 1 sen, you can buy 1 sen or 5 sen stamps and stick to the card. When your card is full of stamps (my first was RM4.00), you go to Pejabat Pos and save into your savings account. Those days we have pos bergerak (van). I opened my account with the Mobile Post Office at Pekan Sari Chenor on Thursday, 31 June 1970 (37 years ago!)
You can see the word "card" written there, and $4.00 opening account.