First of all, apologies for the lack of posting recently. No excuse!
Secondly, a recent thread on rpg.net on things you like that no-one else does reminded me that I really like the 1 Crown = 20 Shillings = 240 Pence system. I’m nowhere near old enough to remember the old money in the UK, but it’s actually a very intuitive system, dividing neatly, as it does, into thirds, quarters, sixths and eighths. Once you’ve got your head round having to calculate in fractions, it’s pretty easy.