There were no Australian Threepences minted prior to 1910.
Please ask one question at a time in the format "What is the value of a 1919 Australian Threepence" for example. Most answers already exist on WA.
The rarest general circulation Australian Threepence, as distinct from the most valuable, would be the 1942 Threepence minted in Melbourne of which there were 520,000 minted. The other Threepences minted in 1942 were minted in the San Francisco (mintmark = S) and Denver (mintmark = D) mints in the USA. Threepences from this period that were struck in Melbourne have no mint mark. All others will have a mint mark on the reverse below the fourth digit of the year indicating the city where minting occured.
If you are hoping to add value to the coin, DO NOT CLEAN IT with anything. Cleaning of coins damages the finish and reduces value. All Australian Threepences were made from sterling silver from 1910 to 1944, or 50% silver from 1947 to 1964. If you have an otherwise valueless coin that you would just like to clean so that it looks nice, try any of the commercially available jewellery cleaners.
The Australian Threepence was minted in most years from 1910 to 1964 inclusive. Assuming they are in mint uncirculated condition, the most valuable coins not including pattern, proof or error coins would be - 1915 - $4,500 AUD 1942 - $3,700 AUD 1923 - $3,350 AUD 1914 - $2,650 AUD 1912 - $2,450 AUD The collector value descends rapidly as the condition of the coin decreases.
No. A coin denomination as low as Threepence would not be minted in gold. In 1915 they were made from 92.5% silver.
Australia does not currently have, and is not likely to have a Two Hundred Dollar note anytime in the foreseeable future.
Six hundred two sextillion, two hundred quintillion.
What is "this" but possibly.
86500
There are no Australian One Million Dollar banknotes. There are no collectible Australian banknotes that would get anything near One Million Dollars.
The Reserve Bank of Australia advises that the thickness of 1,000 Australian One Hundred Dollar polymer banknotes is 140.8 mm plus or minus 5%. Therefore 100 One Hundred Dollar polymer banknotes would be 14.08 mm plus or minus 5%. The 5% allowance is for wear and tear on circulating banknotes.
A general circulation British Threepence was not minted for quite a few years from 1801 to about 1833 inclusive, and only periodically in the years from 1787 to 1800. The Threepence was minted for the use of the British Colonies from 1838 to 1844 before it was reintroduced into the British currency on a regular basis in 1845. You most likely have a Maundy Threepence. The Maundy Threepence would be very similar in appearance to a general circulation Threepence, but would be a little more of a "showy" coin having been minted on polished blanks and specially prepared and polished dies. A British 1826 sterling silver Maundy Threepence (George IV), uncirculated and in absolute mint condition could fetch up to £35 GBP. If it has been circulated but still in good condition, it might fetch anything up to £14 GBP. NOTE - The reverse of these coins is upside down to the obverse. This is normal. The values quoted are the best possible for the best specimens in their grades, but may be significantly lower due to varying demand for the coin and the prevailing economic climate. A reputable coin dealer will be able to give a more accurate valuation based on inspection of the coin.