2 DOES YOUR LOOSE CASH DRAIN AWAY? National Savings Stamps can be exchanged for Savings Certificates, Defence Bonds or Savings Bonds of the Savings Banks Loose change has a way of doing the vanishing trick. issues, or used to make But here's an easy way to stop it. Turn your change deposits in the Post Office into National Savings Stamps. Buy them after or Trustee Savings Banks. shopping. Buy them whenever your purse feels heavy. And, of course, buy them regularly through your Savings Group. You can get them from any Post Office, Trustee Savings Bank, Honorary Official Agent, Savings Centre or Savings Group.