King George II Halfpennies varied in size from 28 to 30mm in diameter.
Queen Victoria was born of the Royal House of Hanover in 1819. British monarchs from the House of Hanover included George I, George II, George III, George IV, William IV and Victoria. There were no Victorian 1837 coins minted, 1837 was the year of her coming to the throne, and there were no British coins minted with "Hanover" on them. These "coins" are most likely a token used as a gaming chip or similar.
An Australian 1964 bronze Halfpenny (Elizabeth II)(minted in Perth - mintmark = Y.), uncirculated and in absolute mint condition could fetch up to $5 AUD. If it has been circulated but still in good condition, it might fetch anything from $0.30 to $1.50 AUD. There were 18.23 million minted. The 1964 Halfpenny was the last to be minted prior to the introduction of Decimal Currency. A reputable coin dealer will be able to give a more accurate valuation.
An Australian 1960 bronze Halfpenny (Elizabeth II), uncirculated and in absolute mint condition could fetch up to $12 AUD. If it has been circulated but still in good condition, it might fetch anything from $0.30 to $3 AUD. There were 16.784 million minted. An Australian 1960 bronze Halfpenny (Elizabeth II)(Proof), uncirculated and in absolute mint condition could fetch up to $1,000 AUD. There were 1,030 minted. A reputable coin dealer will be able to give a more accurate valuation.
An Australian 1962 bronze Halfpenny (QE II), uncirculated and in absolute mint condition could fetch up to $7 AUD. If it has been circulated but still in good condition, it might fetch anything from $0.30 to $2 AUD. There were 16.41 million minted. An Australian 1962 bronze Halfpenny (QE II)(Proof), uncirculated and in absolute mint condition could fetch up to $950 AUD. There were 1064 minted. A reputable coin dealer will be able to give a more accurate valuation.
An Australian 1943 bronze Penny (George VI)(minted in Melbourne - no mintmark), uncirculated and in absolute mint condition could fetch up to $120 AUD. If it has been circulated but still in good condition, it might fetch anything from $0.75 to $30 AUD. There were 11.107 million minted. An Australian 1943 bronze Penny (George VI)(minted in Perth - mintmark = "Y."), uncirculated and in absolute mint condition could fetch up to $115 AUD. If it has been circulated but still in good condition, it might fetch anything from $0.75 to $28 AUD. There were 33.086 million minted. An Australian 1943 bronze Penny (George VI)(Proof)(minted in Perth - mintmark = "Y."), uncirculated and in absolute mint condition could fetch up to $40,000 AUD. An Australian 1943 bronze Penny (George VI)(minted in Bombay - mintmark = "I"), uncirculated and in absolute mint condition could fetch up to $135 AUD. If it has been circulated but still in good condition, it might fetch anything from $0.75 to $30 AUD. There were 9.0 million minted. An Australian 1943 bronze Penny (George VI)(Proof)(minted in Bombay - mintmark = "I"), uncirculated and in absolute mint condition could fetch up to $40,000 AUD. A reputable coin dealer will be able to give a more accurate valuation.
The Shilling coin was minted in most years of the reign of George II. Can you be more specific about which particular year you might be referring to?
There were no 1740 British Crown coins minted. The Crown coin was not regularly minted during the reign of King George II.
A New Zealand 1961 bronze Halfpenny (Elizabeth II), uncirculated and in absolute mint condition could fetch up to $15 NZD. If it has been circulated but still in good condition, it might fetch anything from $2 to $6 NZD. There were 2.88 million minted. A reputable coin dealer will be able to give a more accurate valuation.
Iyasu II of Ethiopia died in 1755.
An Australian 1945 bronze Halfpenny (George VI)(minted in Melbourne - no mintmark), uncirculated and in absolute mint condition could fetch up to $225 AUD. If it has been circulated but still in good condition, it might fetch anything from $2 to $45 AUD. An Australian 1945 bronze Halfpenny (George VI)(minted in Perth - Y.), uncirculated and in absolute mint condition could fetch up to $225 AUD. If it has been circulated but still in good condition, it might fetch anything from $2 to $45 AUD. There were 3.494 million minted in total. A reputable coin dealer will be able to give a more accurate valuation.
All British King George II Pennies were made from silver. Only Halfpennies and Farthings were made from copper.