always when I check if it is DD I must turn the coin and look at it from different angles, otherwise MD is not visible from different angles while DD is always visible no matter how you turn the light source and tilt the coin.
Thank you for your advice, otherwise I use this kind of light so that the coin is illuminated from all sides. I will try with a different light source to take photos again
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I apologize for the poor photos (old camera). For a long time now I have been trying to figure out what this could be, is it a doubled die similar to the one on the One Cent 1972 D - DDR or are the die gouges nicely positioned to resemble the DDR 1972 D
as I can see on the piece from the post, the rim is not serrated, the 50 euro cent coins have a serrated rim. There is a huge amount of counterfeits of all denominations except 1, 2, and 5 euro cents.
I managed to find photos of the piece in question online. I hope they will be helpful since we did not get enough information about the coin from the post. Also, the piece I am posting appears to be a different variant than the one shown in the post.
A very frequent occurrence at the Royal Mint London. For example, here in Bosnia and Herzegovina, the coins are minted by the Royal Mint London and on the 2 KM coins from 2019, the dove on the obverse is affected by the same type of error, it is harder to find a normal piece than with that.