[phillco]

Even better: the US used to have a half-cent but they abolished it in 1857 due to its lack of value. With inflation, it's worth more than today's dime.

[kamjam]

For a few years during the transition to decimalisation, the UK had a half penny also.

http://en.wikipedia.org/wiki/Halfpenny_(British_decimal_coin...

[alasano]

Some would argue that your example is almost exactly as good as the other one given.

[schiffern]

His example features actual abolition of an existing coin, not just deciding "well, this ought to be granular enough" when designing money.