I have a '60s book on PL/1 which mentions a specific data type for storing the pre-1971 currency. It was a syntactic structure around storing the amount as a q

I have a '60s book on PL/1 which mentions a specific data type for storing the pre-1971 currency. It was a syntactic structure around storing the amount as a quantity of pence. I'd expect there was still ugliness as the conversion ratio was 2.4 to 1, not making for an elegant quick shift.