Quote:
Originally Posted by John the Jute At a lower level of emotion, most all coins less than three-quarters of an inch in diameter have in their time inspired ANNOYANCE at being too small for practical use. The US dime--and its UK equivalent the 5 pence piece--are just about on the irritability boundary. |
The Fractional Gold coinage of the California Gold Rush were WAY beyond the limits of irritability !

Imagine a micro-coin with 25c worth of gold.
Very interesting history in those if you're interested.