You do not give any details.
Any bank note with a "genuine" minting flaw would have some value, above the usual, as a collectible bank note.
Genuinely flawed notes are not necessarily known about or documented until somebody turns up with one, since they are an "accident" of the printing process, and have escaped detection during quality control at the printers therefore, a valuation cannot be anticipated.
A reputable coin dealer should be able to identify and confirm the note as genuine and make a valuation.
The Value of a misprinted one pound note there is no real value it depends what dealers etc will pay for it I would reckon about £20
St George appears on many different British pre-1960 One Pound notes, incuding H.M. Treasury notes and Bank of England notes. Pinning it down to a particular One Pound note would require the name of the Chief Cashier.
One Pound British in 1860 had the purchasing power of about £63.10 GBP in 2010. This is an approximation based on the value of the pound in 1860 and the value of the pound in 2010, factoring for inflation.
i have a £1 sterling banknote in MINT condition with a small letter g on the reverse which I understand to be a misprint .Can you advise on its value ? It is not a misprint. Bank of England, 1 Pound, "G" notes, signed by J. S. Fforde were printed on an experimental, reel fed machine, manufactured by Goebel in Germany and are identified by a small letter 'G' on the reverse. Serial prefixes run from E01Y to E99Y and from K01Z to K99Z. They are sold at auction, depending on their condition, for around £7 or £8 max.
The term "pound" to describe a British monetary value has been in use for hundreds of years, but there was no official coin or banknote to the value of "One Pound" and called "One Pound" issued until much more recently. The modern Sovereign (with a face value of a One Pound or 20 Shillings) was reintroduced into the British currency in 1817. The first British coin with a "Pound" denomination ascribed to it was the 1820 Five Pound gold coin. The Bank of England produced One Pound notes periodically from 1797 to 1821. The first official regular issue of British One Pound note, which was actually a Treasury Note, was first issued in 1914. The first British decimal One Pound coin was issued in 1983.
The Cyprus pound ceased to be legal tender when Cyprus joined the Euro. Therefore any notes are of interest or value to collectors only.
A British Pound in 1799 had the purchasing power of about £62.87 GBP today.
The face value of anything is whatever is written on it. The face value of a Pound, is a Pound. If you want to find out what the current exchange rate in US Dollars is for a British Pound, see the link below.
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The Shilling has always been 1/20th of a British Pound.
There was no 1811 British Sovereign or One Pound coin minted.
The Pound did not exist as a unit of currency in 1469.