A British 1911 (Proof FDC) set of coins (Five Pounds to Maundy Penny - 12 coins), in absolute mint condition could fetch up to £4,200 GBP.
A British 1911 (Proof FDC) set of coins (Sovereign to Maundy Penny - 10 coins), in absolute mint condition could fetch up to £1,300 GBP.
A British 1911 (Proof FDC) set of coins (Halfcrown to Maundy Penny - 8 coins), in absolute mint condition could fetch up to £580 GBP.
The value of any coin set is also dependent on the state of the original packaging.
A reputable coin dealer will be able to give a more accurate valuation.
There are no British general circulation decimal coins that could be considered to have any collector value unless they are "Mint Uncirculated", "Proof", or part of a "Mint" or "Proof" coin set.
What is value of proof set of Commonwealth of the Bahams proof set 1974
The current value of a 1962 US proof set is $29.
The current value of a 1950 proof set is $750.
The value of the set is dependent on condition. However, the proof set value is between $50 and $70 US.
There is no record of the Royal Mint having produced a "gold" Proof set in 1974, only the usual Proof set. Royal Mint gold Proof sets issued from 1980 contain only the "Sovereign" coinage.
If all coins have birds on reverse, it is a BVI proof set. Average retail value is $12.50.
1976 bicentennial proof set silver dollar half and quarter what's the value of this uncirculated set?
A 1988 proof set has a retail value of $8.00 issue price was $11.00
The current average value of a 1962 US proof set is $29.
The 5 coin proof set has a value of $6, the 10 coin set has a value of $15 and the 10 coin silver set has a value of $48.
British decimal proof sets in the early years contained few coins and were widely collected, they sell for about $10 online.