An English silver coin of the value of six pennies; half a shilling, or about twelve cents.
a small coin of the United Kingdom worth six pennies; not minted since 1970
a tanner, and a shilling a bob, but what a pony is I don't know
a coin of the realm, see bawbee and sia sgilligean.
Pre-decimal currency. A coin worth six pennies equivalent to 2.5p today.