There was no 1955 British Crown (Five Shillings) minted. You possibly refer to the 1953 "Coronation" Crown.
Five Shillings GBP in 1530 had the purchasing power of about £86.94 GBP today.
what is the value of a Jamaica five shillings
it is worth $.006 American dollars
5
The coins of James I are as follows -First Coinage 1603-1604Gold coins -Sovereign (20 Shillings)Half-Sovereign (10 Shillings)Crown (5 Shillings)Halfcrown (2 Shillings and Sixpence - 2/6)Silver coins -Crown (5 Shillings)Halfcrown (2 Shillings and Sixpence - 2/6)ShillingSixpenceHalfgroatPennyHalfpennySecond Coinage 1604-1619Gold coins -Rose-ryal (30 Shillings)Unite (20 Shillings)Spur-Ryal (15 Shillings)Angel (10 Shillings)Half-angel (5 Shillings)Double-crownBritain crownThistle crown (4 Shillings)HalfcrownSilver coins -Crown (5 Shillings)Halfcrown (2 Shillings and Sixpence - 2/6)ShillingSixpenceHalfgroatPennyHalfpennyCopper coins -FarthingThird Coinage 1619-1625Gold coins -Rose-ryal (30 Shillings)Laurel (20 Shillings)Spur-Ryal (15 Shillings)Angel (10 Shillings)Half-laurel (10 Shillings)Quarter-laurel (5 Shillings)Silver coins -Crown (5 Shillings)Halfcrown (2 Shillings and Sixpence - 2/6)ShillingSixpenceHalfgroatPennyHalfpennyCopper coins -FarthingIn 1612, all coins had their value increased by 10%, but seem to have reverted to their original values by 1619.
There was no "Festival of Britain" Florin minted, you possibly refer to the "Festival of Britain" Crown (Five Shillings). See "What is the value of a 1951 British Crown - Festival of Britain".
There were a variety of gold coins circulating in England during the 1500's. The face value of many coins changed from time to time for economic reasons. Circulating British gold coins of the 1500's , included - Sovereign (20 Shillings) Half-Sovereign (10 Shillings) Double-Sovereign (40 Shillings) Treble-Sovereign (60 Shillings) Fine-Sovereign (30 Shillings) Ryal (10 Shillings or, 15 Shillings) Angel (6 Shillings and 8 Pence or, 7 Shillings and 6 Pence or, 8 Shillings or, 10 Shillings) Half-Angel or Angelet Quarter- Angel George- Noble (6 Shillings and 8 Pence) Half-George- Noble (3 Shillings and 4 Pence) Crown of the Rose (4 Shillings and 6 Pence) Crown of the Double-Rose (5 Shillings) Crown Halfcrown Pound (20 Shillings) Half-Pound (10 Shillings)
Five Pounds, Ten Shillings GBP in 1787 had the purchasing power of about £515.00 GBP today.
The sign for the British Shilling was an S if a sign was required. £1/2/6 or £1/2/6d represented One Pound, Two Shillings and Sixpence. The Shilling value is between the Pound value and the Penny value, so it does not need a sign. The position of the 2 makes the value Two Shillings. 2/6d represented Two Shillings and Sixpence. The Shilling value precedes the Penny value, so it does not need a sign. The position of the 2 makes the value Two Shillings. If the need arose to indicate an even Shilling value, it was written as 2/-, indicating Two Shillings and zero Pence or, 2S, indicating Two Shillings.
A Halfcrown is the eqivalent of Two Shillings and Sixpence. A Crown was Five Shillings.
The sign for the British Shilling was an S if a sign was required. £1/2/6 or £1/2/6d represented One Pound, Two Shillings and Sixpence. The Shilling value is between the Pound value and the Penny value, so it does not need a sign. The position of the 2 makes the value Two Shillings. 2/6d represented Two Shillings and Sixpence. The Shilling value precedes the Penny value, so it does not need a sign. The position of the 2 makes the value Two Shillings. If the need arose to indicate an even Shilling value, it was written as 2/-, indicating Two Shillings and zero Pence or, 2S, indicating Two Shillings.
5 Shillings GBP in 1950 had the purchasing power of about £5.74 GBP today. 5 Shillings GBP in 1950 had the purchasing power of about $9.45 USD today.