274 LISTEN TO YOUR WISER SELF! A moment's reflection before you spend that money. Your Wiser Self has got something important to say. "Isn't it rather foolish to spend so much just now?" she says. "Wouldn't it be more sensible to put some of it into National Savings Certificates?" Every 15/- Certificate earns you 5/6 in 10 years' time. This increase is not subject to Income Tax. BECAUSE They're easy to buy, easy to hold, easy to cash. Savings up keep prices down. NATIONAL SAVINGS CERTIFICATES ISSUED BY THE NATIONAL SAVINGS COMMITTEE.