Double Die Struck Royal Mint Error 2018 One £1 Pound Coin Unc Condition

Welcome to sheldons shop These are brand new straight from the bag This is for a rare DOUBLE DIE STRUCK royal mint error nations of the crown 2018 one pound coin In unc condition.. This came from a sealed bag of 20 coins so it's in uncirculated condition As you can see clearly the coin is double die struck.. The lettering is double die Their are two sets of initials as the.. IS DOUBLE DIE The queen has two noses The hologram sheild is also double die you can see the double strike on the top of the sheild The date is double die this is a rare error Clearly doubled lettering or other elements Doubled details, where some digits/letters or other design elements appear twice is most commonly caused by something known as mechanical doubling, or machine doubling. Mechanical doubling is caused when a coin is struck where there has been a simultaneous slight movement of a die, resulting in a double impression of design elements.

Such doubling, is rare on UK coins. Very weak, usually raised shadows or faint hints at duplicate detail around design elements (mostly letters and digits) that tend to extend towards the rim of the coin is caused by die fatigue. This happens when dies are used well beyond their normal working life each coin they have struck has taken its toll on the surface of the die and the repeated metal flow into the incuse die slowly wears out its detail.

Often coins struck with worn dies can have letters and digits that appear fatter and less sharp. A much scarcer and much more pronounced form of doubled detail is caused when a coin is struck from a die that has been engraved with doubled detail in the first place. Doubled die coins are caused by a problem in what is known as the hubbing process, which is an earlier stage of coin production where master dies are created from a relief (raised) impression of how the coin side should look. The hubbing process that imparts the incuse (negative) detail on the master dies doesnt happen once per master die and it is these multiple passes that can, if there is a slight slippage or movement, result in a master die with doubled features.

The item "DOUBLE DIE STRUCK ROYAL MINT ERROR 2018 ONE £1 POUND COIN UNC CONDITION" is in sale since Saturday, December 14, 2019. This item is in the category "Coins\Coins\British\Decimal Coinage (c.

The seller is "marlybob1" and is located in Leeds. This item can be shipped to United Kingdom.

• Modified Item: No
• Country/Region of Manufacture: United Kingdom
• Year of Issue: 2018
• Denomination: One Pound
• Collections/ Bulk Lots: Collections/ Bulk Lots