Why not? In 1813 Australian Governor Lachlan Macquarie overcame an acute currency shortage by purchasing Spanish silver dollars (then worth five shillings), punching out the centres and creating two new coins - the 'Holey Dollar' (valued at five shillings) and the Dump (valued at one shilling and three pence). This single move not only doubled the number of coins in circulation but increased their total worth by 25 per cent and prevented the coins from leaving the colony.