Ask how many 1925 pennies Australia struck and you get a number. The number is not a count of coins, and the people quoting it do not say so, mostly because they do not know. Here are two demonstrations you can run yourself on this page.
Australian mints kept their coinage records in pounds sterling. A piece count is that pound figure multiplied by the number of coins in a pound: 240 pennies, 480 halfpence, 40 sixpences, 20 shillings, 10 florins. So a published pre-decimal mintage is really a pound figure wearing a coin's clothes, and it cannot be finer than one pound's worth of that coin.
The Royal Mint's report for 1920 states the Sydney Mint's output twice, once in pounds and once in pieces, and prints a total. That makes the claim checkable rather than arguable. Change a conversion factor below and watch the mint's own arithmetic stop closing.
There were coined and delivered during the year to the Common— wealth Treasury, under contract, 26,1001. in shillings, 29,1001. in sixpences, 0091. in pence, and 11,0001. in halfpence, a total of 7,112,160 pieces.
Report of the Deputy Master of the Royal Mint, 1920, Sydney Mint. The trailing “1.” is OCR of the pound suffix, so 26,1001. is £26,100. The pence figure (“0091.”) is damaged, and this page does not guess it: it is whatever makes the mint's own total close.
If the figures are pound records, they should be whole numbers of pounds far more often than chance allows. Here are all 51 published Australian penny mintages. Type any figure, or click a year.
| Year | Published mintage | In pounds | Whole pounds? |
|---|
The 1925 penny is usually given as 1,639,200. A rarer figure of 117,289 is sometimes quoted for a related striking from die records. 1,639,200 is £6,830 exactly; 117,289 is not a whole number of pounds at all. A pound ledger cannot produce 117,289, and a die record can. The two numbers are not rival counts of the same thing: they come from different kinds of book.
The Royal Australian Mint defines a collector coin's mintage as a cap. Its own 2024–25 annual report prints, for every product, the quantity produced and the declared mintage. Of 184 products, 103 declare “Unlimited”. Of the 81 with a number, 58 produced a different quantity than they declared.
The control that tells a cap from a count: a count should miss in both directions. Products that produced more than their declared mintage: 0.
Every deviation is downward, which is what a ceiling predicts and what a tally does not.
| Product | Made | Declared mintage | Made as % of declared |
|---|
Not that the published figures are wrong. That they answer a different question than the one people ask them. So this catalogue records, beside every number, what was counted and how precisely it was printed, and where two sources differ it keeps both rather than choosing. The full data, with sources, is at the catalogue.