If by "new" you mean a decimal coin, the Half New Penny and Half Penny coin was in circulation from 1971 to 1983.
The 25 Pence (Crown) coin was only issued in 1972, 1977, 1980 and 1981 and was intended to be a commemorative rather than a circulation coin. The Five Pound Crown replaced the niche of the 25 Pence Crown in 1990.
The uni-metallic Two Pound coin was issued in 1986, 1989, 1994, 1995 and 1996 and was intended to be a commemorative rather than a circulation coin. The general circulation bimetallic Two Pound coin was first issued in 1997.
No. There has been no silver in any British general circulation coin since 1946. All British "silver" coins from 1947 onwards are made from a copper-nickel alloy.
The coin is still in circulation and only a dollar.
The 1927 British Florin (Two Shillings) was not issued as a general circulation coin, it was only released as a "Proof FDC" and a "Matt Proof FDC" coin and there were only 15,000 minted. The Matt Proof FDC coin is described as being of the highest rarity. The Proof FDC coin would perhaps be described as being scarce.
The British 20 Pence coin has only been in circulation since 1982, so they are neither old, rare nor valuable. The only exception to this would be the 2008 mule. Due to a mix up with the dies, there are somewhere between 50,000 to 200,000 in circulation with no year on them.
The coin is still in circulation today and has face value only.
A Sacagawea one dollar coin is typically worth its face value of one dollar. However, if it is in mint condition or part of a rare set, it could be worth more to collectors. It is best to check with a coin dealer or online resources for current market values.
This coin is only worth face value since it is still a coin that is in circulation.
These coins have only just been released into circulation so, unless they are part of a Proof or Uncirculated mint set or are individual Proof or Uncirculated coins and in absolute mint condition, they are worth 5 Pence.
It's an ordinary circulation coin worth face value only. Note that ALL coins of the British Commonwealth have the monarch's portrait on the reverse side so that's not a distinguishing feature.
There was no Australian currency in 1907. Any Crown (Five Shillings) coins in circulation in Australia in 1907 would have been British Crowns, and there were no British 1907 Crowns minted either. 1937 and 1938 were the only two years that Australia produced a Crown (Five Shilling) coin.
The coin is still in circulation today and has face value only.
The coin is still in circulation today and has face value only