Adjective
pre-decimal (not comparable)
Prior to decimalisation (specifically the decimalisation of British and Irish currency).
Before 1990, these had a face value of twenty-five pence (25p), equivalent to the five shilling crown used in pre-decimal Britain. Source: Internet
The pre-decimal Maundy pieces have the same legal tender status and value as post-decimal ones, and effectively increased in face value by 140% upon decimalisation. Source: Internet
These were the five pence (5p) and ten pence (10p), and had values of one shilling (1/-) and two shillings (2/-), respectively, under the pre-decimal £sd system. Source: Internet