All British One Pound coins have the date on them.
The absence of the date may indicate that somebody has removed it, or that the coin is a poor forgery.
Alternatively, any coin with a "genuine" minting flaw would have some value, above the usual, as a collectible coin.
Genuinely flawed coins are not necessarily known about or documented until somebody turns up with one, since they are an "accident" of the minting process, and have escaped detection during quality control at the mint therefore, a valuation cannot be anticipated.
A reputable coin dealer should be able to identify and confirm the coin as genuine and make a valuation.
It's value is one pound (£1) there are no coins minted with Queen Elizabeth on both sides.
It is quite likely that the writing is missing because your coin is counterfeit. More than 4% of circulating £1 are known to be counterfeit.
it is a fake coin and has no value
This Was not made by the mint. Its a novelty coin or something someone has made. The coin has no value.
The coin was NOT made in 1788, just look at the other date on the same side of the coin. Value is 25 cents.
The reasons of a coin having an image only on one side are varied. I suggest you take the coin to a coin shop and have it appraised to get a more accurate estimate of value.
No. You have a trick coin available at magic shops.
This Was not made by the mint. Its a novelty coin or something someone has made. The coin has little or no value.
The Bailiwick of Guernsey One Pound coin issued in 1981 and 1983 has the Bailiwick of Guernsey "Arms" on it. The Bailiwick of Guernsey One Pound coin issued from 1985 onwards, features Queen Elizabeth II on the obverse.
THE COIN IS FROM GERMANY - PRUSSIA - VALUE IS ABOUT $2.00
There is no British One Pound coin designed with the Queen's head on both sides. It is most likely a trick coin available from magic shops. In the extremely unlikely event that a "double header" coin was minted, one side would have a raised image as usual, the other side would have the image indented or incuse.
the value of a 1999 Diana corwn coin is approximately £40+
Check with any local coin collector for sure, but this coin can be worth a LOT of money.
It is a mule.