The 'Ideal' decimal coinage reckoner : every penny to £2 and every 5 pence thereafter to £9, showing at a glance the value of any number of articles from 1/20 to 20,000, also tables of percentages, interest, wages, per ton, cwt, kilo, metric conversion tables, &c. /
Inglis, R. M. G.
Edinburgh : Gall & Inglis,
1969.
Previous ed. 1966.
Coinage.
Money.