Pictures of a specific coin are difficult to come by. Frequently you should be able to find one on eBay, but the picture is withdrawn after the coin is sold.
See the link below.
Such a coin does not exist. In the English Monarchy, a "bronze" Jubilee is not celebrated or commemorated. A bronze Jubilee represents an anniversary of 8 years which is not a significant milestone. 1977 was the Silver Jubilee year (25 years of reign) of Queen Elizabeth II. 1972 was the Silver Wedding Anniversary (25 years of marriage) of Queen Elizabeth II and Prince Phillip. Crown commemorative coins (25 Pence) were issued for both.
A British 1977 cupro-nickel Crown (25 Pence)(Elizabeth II)(Silver Jubilee Commemorative), uncirculated and in absolute mint condition could fetch up to £1.50 GBP. A British 1977 cupro-nickel Crown (25 Pence)(Elizabeth II)(Silver Jubilee Commemorative)(Specimen in presentation folder), could fetch up to £2 GBP. A British 1977 cupro-nickel Crown (25 Pence)(Elizabeth II)(Silver Jubilee Commemorative)(Proof FDC), could fetch up to £5 GBP. A British 1977 Crown (25 Pence)(Elizabeth II)(Silver Jubilee Commemorative)(Silver Proof in case FDC), could fetch up to £22 GBP. 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. NOTE - The 25 Pence coin was known as a Crown from its first issue in 1972 until 1990 when the Five Pound coin, being of similar size, became known as the Crown and the 25 Pence coin was discontinued.
You do not specify whose Silver Jubilee or the country the coin comes from. Presumably you refer to the Silver Jubilee of Queen Elizabeth in 1977. Many Commonwealth countries minted coins commemorating this event. If you got the coin in your change, it is probably only worth whatever is inscribed on it.
Such a coin does not exist. The "Churchill" Crown was a Five Shilling coin issued in 1965. The 1977 Crown was a 25 Pence coin commemorating the Silver Jubilee of Queen Elizabeth II.
Such a coin does not exist. The only two years Australia issued a Crown (Five Shilling) coin was 1937 and 1938.
CHILDEN
Your coin is most likely a Queen Elizabeth II Silver Jubilee Commemorative Crown (25 Pence) coin. In absolute mint condition, it might get anything up to £1.50 GBP.
Prince Charles, the Prince of Wales, has only appeared on two British coins to date. 1. The 1981 25 Pence (Crown) coin commemorating his marriage to Lady Diana Spencer. 2. The 1998 Five Pound (Crown) coin commemorating his 50th Birthday. The 1977 coin to which you possibly refer is the Silver Jubilee of Queen Elizabeth II commemorative 25 Pence (Crown) coin.
A genuine silver coin produced by the Royal Mint will be in protective packaging indicating what the coin is made from. It should also include a certificate of authenticity.
Queen Victoria celebrated her Golden Jubilee (50th) in 1887 and her Diamond Jubilee (60th) in 1897. British gold and silver coins minted from 1887 to 1893 feature what is known as the "Jubilee bust" of Queen Victoria. She is shown as much older than previous images and has a veil and a small crown.
The standard for gold coins issued by the Royal Mint is 22 carat. The Royal Mint issued the 25 Pence (Crown) coin for the Silver Jubilee of Queen Elizabeth II in 1977. The coin was issued as a standard coin, a specimen coin in a presentation folder, a Proof FDC coin, and a silver Proof FDC in a case. No gold coin. There is every possibility that a gold commemorative coin was produced privately by the Franklin Mint or a similar company.
The Isle of Man produces commemorative and collector coins as an export industry and often produces many variants of the same coin in different metals. An Isle of Man 1977 cupro-nickel One Crown coin (Elizabeth II)(Silver Jubilee), uncirculated and in absolute mint condition and the original packaging, could fetch up to £7 GBP. An Isle of Man 1977 sterling silver One Crown coin (Elizabeth II)(Silver Jubilee), uncirculated and in absolute mint condition and the original packaging, could fetch up to £10 GBP. An Isle of Man 1977 sterling silver One Crown coin (Elizabeth II)(Silver Jubilee)(Proof), uncirculated and in absolute mint condition and the original packaging, could fetch up to £12 GBP. 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. The Isle of Man currency (Manx Pound)(IMP) is pegged at par with the British Pound Sterling (GBP) and the Isle of Man decimal coinage, for the most part, resembles the dimensions, composition and history to the equivalent British coins. Isle of Man currency is "legal tender" only in the Isle of Man, and is not acceptable tender in Britain.