I've had a look through the subjects and haven't found a thread for the lowest denomination of coins, although the fractional threads will almost certainly overlap somewhat.
I've always liked low-value coins (farthings are a favourite), and since my recent acquisition of a British third farthing from 1902 (pictured, issued for use in Malta: a farthing was circulating as the equivalent of three Maltese grains, so the third farthing was issued to provide the Maltese with a coin of one grain value), I've been thinking about diversifying along the lines of the smallest denominations from a variety of countries, e.g. 1 centime from France etc (unless they ever issued anything smaller?)
So how about a few ideas to start me off please? The only rule is that no smaller denomination was issued for circulation in the country.
I realise that Britain also issued quarter farthings for use in Ceylon, but I haven't got one of those yet. This represents one sixteenth of the minor currency unit of a penny. Are there any countries that have a smaller fraction than this?
Thanks for your anticipated input!