1. The old coin was round, making it easy to counterfeit. The new coin has 12 sides, but according to the Royal Mint, it will still be able to roll.

  2. The coin includes a secret security measure that is believed to be a material embedded inside that can be scanned by electronic sensors.

  3. It features a hologram that changes from the pound symbol to the numeral one when tilted.

  4. The face of the coin features the fifth coinage portrait of Queen Elizabeth II.

  5. The edges are milled and include microlettering.

  6. The outer ring is gold in color and made from a nickel-brass alloy.

  7. The inner ring is silver in color and made from nickel-plated alloy.

  8. The back of the coin features the image of a rose, thistle, leek and shamrock, symbolizing England, Scotland, Wales and Northern Ireland.

  9. The coin is one-tenth of an inch thinner, nine-tenths of an inch larger in diameter and three-tenths of an ounce lighter than the old one.

    The old coin was round, making it easy to counterfeit. The new coin has 12 sides, but according to the Royal Mint, it will still be able to roll.

    The coin includes a secret security measure that is believed to be a material embedded inside that can be scanned by electronic sensors.

    It features a hologram that changes from the pound symbol to the numeral one when tilted.

    The face of the coin features the fifth coinage portrait of Queen Elizabeth II.

    The edges are milled and include microlettering.

    The outer ring is gold in color and made from a nickel-brass alloy.

    The inner ring is silver in color and made from nickel-plated alloy.

    The back of the coin features the image of a rose, thistle, leek and shamrock, symbolizing England, Scotland, Wales and Northern Ireland.

    The coin is one-tenth of an inch thinner, nine-tenths of an inch larger in diameter and three-tenths of an ounce lighter than the old one.

Click on the numbers to see the coin's features.

Britain introduced a new 1 pound coin on Tuesday replete with security features aimed at diminishing counterfeiting.

The coin, the first to be introduced in 30 years, has 12 sides and contains a secret security feature that is believed to be embedded inside the coin itself.

One in 40 £1 coins are thought to be counterfeit. The old coins will be phased out in October.