Where a law of the Commonwealth as defined by subsection ( 4) of section 10, being a law passed or made before 14 February 1966, contains a form that refers to an amount of money in the currency provided for by the repealed Acts, or provides for an amount of money to be specified in that currency, a person using the form may fill it in in such a manner as to set forth the equivalent of that amount in the currency provided for by this Act.