A Bank of England One Pound note (Series D - green)(Chief Cashier D.H.F. Somerset - depending on the serial number), uncirculated and in absolute mint condition could fetch anything up to £5 GBP. If it has been circulated but still in good condition, it might fetch anything up to £3 GBP.
A reputable coin dealer will be able to give a more accurate valuation.
A British 198? One Pound note (Series D - green)(D.H.F. Somerset - CN to CZ), uncirculated and in absolute mint condition could fetch anything up to £4 GBP. If it has been circulated but still in good condition, it might fetch anything up to £2 GBP.
A series of consecutively numbered notes will attract a slightly higher price.
A reputable coin dealer will be able to give a more accurate valuation.
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The serial numbers are CZ75 691942/3/4/5. They are very good condition. No folding or bent corners, but 2 have slight watermark on one side.
A Bank of England Ten Pound note (Series D - brown)(D.H.F. Somerset - serial AX69), uncirculated and in absolute mint condition could fetch anything up to £35 GBP. If it has been circulated but still in good condition, it might fetch anything up to £18 GBP.
A reputable coin dealer will be able to give a more accurate valuation.
A British 198? One Pound note (Series D - green)(Chief Cashier D.H.F. Somerset - serial CX--), uncirculated and in absolute mint condition could fetch anything up to £4 GBP. If it has been circulated but still in good condition, it might fetch anything up to £2 GBP.
A reputable coin dealer will be able to give a more accurate valuation.
A Bank of England Five Pound note (Series D - blue)(Chief Cashier D.H.F. Somerset - serial HR17), uncirculated and in absolute mint condition could fetch anything up to £18 GBP. If it has been circulated, not much.
A reputable coin dealer will be able to give a more accurate valuation.
A Bank of England Five Pound note (Series D - mostly blue)(Chief Cashier D.H.F. Somerset - depending on the serial number), uncirculated and in absolute mint condition could fetch anything from £18 up to £35 GBP. If it has been circulated but still in good condition, it might fetch anything up to £15 GBP.
A reputable coin dealer will be able to give a more accurate valuation.
A Bank of England One Pound note (Series D - green - Sir Isaac Newton)(Chief Cashier D.H.F. Somerset - serial BW25), uncirculated and in absolute mint condition could fetch anything up to £5 GBP. If it has been circulated but still in good condition, it might fetch anything up to £3 GBP. A reputable coin dealer will be able to give a more accurate valuation.
A Bank of England One Pound note (Series D - green)(Chief Cashier D H F Somerset - serial CS75), uncirculated and in absolute mint condition could fetch anything up to £4 GBP. If it has been circulated but still in good condition, it might fetch anything up to £2 GBP. A reputable coin dealer will be able to give a more accurate valuation.
A Bank of England 1984 Ten Pound note (Series D - mainly brown)(Chief Cashier D.H.F. Somerset - depending on the serial number), uncirculated and in absolute mint condition could fetch anything up to £35 GBP. If it has been circulated but still in good condition, it might fetch anything up to £18 GBP. A reputable coin dealer will be able to give a more accurate valuation.
A Bank of England One Pound note (Series D - green)(Chief Cashier D.H.F. Somerset - serial CW65), uncirculated and in absolute mint condition could fetch anything up to £4 GBP. If it has been circulated but still in good condition, it might fetch anything from up to £2 GBP. A reputable coin dealer will be able to give a more accurate valuation.
You have omitted the first 3 or 4 characters of the serial number and not provided the name of the Chief Cashier. Modern Bank of England One Pound notes were issued from 1928 to 1984. Please narrow down the possibilities a lot.
The Bank of England issued the last One Pound note in 1984, then withdrew and demonetised the One Pound note in 1988, after it was replaced by the One Pound coin in 1983. A Bank of England 1971 One Pound note (Series D - green)(Chief Cashier - D.H.F. Somerset - depending on the serial number), uncirculated and in absolute mint condition could fetch anything from up to £5 GBP. If it has been circulated but still in good condition, it might fetch anything up to £3 GBP. Consecutively numbered uncirculated notes may attract a higher price. A reputable coin dealer will be able to give a more accurate valuation.
You have not provided a serial number or a place of issue, but you potentially have a note of value.
In mid-2002, the Bank of England withdrew a batch of Five Pound notes due to the ink on the serial numbers smudging and being able to be rubbed off.
A pound is always worth exactly 1 pound in England.
A British 198? One Pound note (Series D - green)(Chief Cashier D.H.F. Somerset - serial DW06), uncirculated and in absolute mint condition could fetch anything up to £5 GBP. If it has been circulated but still in good condition, it might fetch anything up to £3 GBP. A reputable coin dealer will be able to give a more accurate valuation.
The currency unit in England is the Pound Sterling The currency unit in England is the Pound Sterling
Without knowing the serial number, your 1952 Bank of England white Five Pound note could fetch up to £200 GBP in mint condition. The Chief Cashier was P.S. Beale.