In the case of a police officer who, after making a transfer election in accordance with paragraph 1(b), makes an appropriate payment in accordance with regulation 10(1) in respect of a period of service as a police officer which ceased before the date on which that transfer election took effect, he shall be entitled to reckon as pensionable service for the purposes of these Regulations a period calculated by the Board by multiplying the period of pensionable service to which the appropriate payment relates by the appropriate conversion factor applicable to his age next birthday at the notional commencement of pension contributions under the 1988 Regulations, given in the table set out in paragraph 6.