In message <8Nq16iPz6RvEFwE5 at pigsonthewing.org.uk>, Andy Mabbett <andy at pigsonthewing.org.uk> writes >Consider a defunct currency Example: http://charlesdickenspage.com/works.html a novel cost 31 shillings in 1836, average worker earned 6 to 20 shillings per week) but a monthly installment, 32 pages with 2 illustrations and advertisements, could be sold for a shilling. Literally, six shillings = GBP 0.30; 20 shillings = GBP 1.00; but both have to be multiplied by some factor to give current-day equivalencies. -- Andy Mabbett Say "NO!" to compulsory ID Cards: <http://www.no2id.net/> Free Our Data: <http://www.freeourdata.org.uk>