Nonetheless, he could provide a strong voice for the Treasury within the central bank.
The result, the agency said, was an additional $4.3 billion in taxes for the Treasury.
"Then it is a good deal for the Treasury, yes."
The gain would instead be for the national Treasury, in money not spent.
From 1966 to 1969 he was served as minister for the Treasury.
A spokesman for the Treasury said it would now consider its response.
If not extended, these will raise about $35 billion annually for the Treasury.
This added participation could also result in lower costs for the Treasury.
The company had been making currency stock for the Treasury since 1879.
Each percentage point by which those taxes were increased would raise $2 billion for the Treasury, he said.