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If the coin has one, the mintmarks are on the reverse under the eagle.
Retail values for 1852 Liberty Head gold dollar coins run from $126.00-$270.00 for circulated examples. Uncirculated start at $288.00
There is no record of a British 1852 Penny having been minted.
It depends on the mint mark, if any, between the eagle's claw and the "1/2" in the denomination. Retail prices for moderately worn 1852 quarter eagles are: No mint mark - about $150 "O" mint mark - $170 "C" mint mark - $730 "D" mint mark - $940
2000
A 1852 penny - aka - Coronet Large Cent - in good condition (G4) is worth: $20.00; if its mint state is MS60, the value is: $500.00.
The 1852 & 1853 Type 1 Liberty Head gold dollars are high mintage dates of the series and considered common. Most coins have seen heavy use and show a lot of wear. In general retail values are $200.00-$300.00 but only for coins in collectible condition, coins that are bent, corroded, scratched, used as jewelry or have been cleaned have far less value if any to a collector or dealer.
July 5, 2009 I'm not sure what you mean by "Mk1". The US $1 gold coin being minted in 1852 was the Liberty Head Type and 2,045,351 of them were made. In high grade circulated condition they can be bought for about $200-$250. In uncirculated grades they can be bought for about $1000-$1300.
You didn't specify whether it's a silver dollar or a gold dollar; both types were minted in 1852. If it's a silver dollar with that date it should be checked by a dealer to make sure it's not counterfeit. 1852 is a scarce date for Seated Liberty dollars and there are many fakes on the market. If it's a gold dollar, please see the Related Question for specific information.
Go to Google.com and type in "Immigrant ships - England to Australia 1852". There are many websites giving passenger lists there.
The Quarter-Farthing coin was minted by the Royal mint in 1839, 1851, 1852 and 1853 for use in Ceylon. They were not minted with a hole in them. Modified coins have no collector value. Without the hole, a circulated coin, depending on year and condition, might get anything from £10 to £150 GBP.
Requires professional appraisal