419 Make a real job of it Roll in the Jack and make a tidy group of your savings. First bowl up your full 500 of the 15/- Certificates. Then go for the 250 £1 Certificates you are allowed. If you put a bias on your spending each week you will soon get close to the winning score. Score the maximum in SAVINGS CERTIFICATES 500 15/- 250 £1 15/- CERTIFICATES become worth £1 CERTIFICATES become worth 20/6 in 10 years, equal to interest of £1 . 3 . 0 in 10 years, equal to interest £3 . 3 . 5 per cent. per annum free of £1 .