£5
It's worth exactly one pound.
A 1889 gold 5 pound coin is worth 5 pounds of gold, while a 1889 2 pound gold coin is only worth 2 pounds of gold.
Such a coin does not exist. The English have never produced a 4 Pound coin.
Face value.
8-11p
£25
£30.000
£2
I suggest you get a good coin book and search for your coin in there.
As I type this the value of 1 pound of gold is $18,040.00
An Irish "Millennium" coin, with a face value of one Irish punt (or "pound"), is worth about US$7.50 in Uncirculated condition and about US$8.50 in Proof.
An "R" stamped in the middle of the Queen's head is not part of the design feature of any coin in any year. As long as the coin is recognisable as Two Pound coin, it is worth Two Pounds.