One Pound (Bimetallic), Coin Type from United Kingdom - detailed information

One Pound (Bimetallic), Coin Type from United Kingdom (issued 2016 - )
Coin TypeOne Pound (Bimetallic)

The British one pound (£1) coin is a circulating denomination of the Pound Sterling. The coin was introduced in 1983 to replace the Bank of England one pound note which ceased to be issued at the end of 1984. The original coin was round and was made of nickel-brass. A large number of reverse designs were issued in this format until it was discontinued in 2016, and its legal tender status withdrawn at midnight on Sunday 15th October 2017.

The new 12-sided £1 coin was introduced into circulation in the United Kingdom on 28th March 2017, with some of the coins minted earlier and dated 2016.

The coin has a 12-edged shape, similar to the pre-decimal brass threepence coin; it has roughly the same size as the previous £1 coin, and is bi-metallic like most £2 coins. Bimetallic means it is made of two metals - the outer ring is gold coloured (nickel-brass) and the inner ring is silver coloured (nickel-plated non-ferrous alloy).

A security feature is a "latent image" under the Queen's portrait - something like a hologram that changes from a "£" symbol to the number "1" when the coin is seen from different angles. Another security feature is micro-lettering - very small lettering on the lower inside rim on both sides of the coin, "ONE POUND" on the obverse (“heads”) side and the year of production on the reverse side, for example 2016, 2017 etc.

The new design is intended to make counterfeiting (which affected the earlier type significantly) more difficult, and also has an undisclosed hidden security feature called "iSIS" (Integrated Secure Identification Systems), thought to be a code embedded in the top layer of metal on the obverse of the coin, visible only under a specific wavelength of ultraviolet light.

Obverse
United Kingdom / One Pound (Bimetallic) - obverse photo

Effigy of the ruling British monarch, date, legend (in Latin); note that unlike on earlier coinage, the date comes before the legend.

Repeated multiple times in micro-text around the rim: ONE POUND. A security feature is a "latent image" under the Queen's portrait - something like a hologram that changes from a £ symbol to the number 1 when the coin is seen from different angles.

Obverse Inscription Date, legend of the ruling British monarch
Reverse
United Kingdom / One Pound (Bimetallic) - reverse photo

The reverse design, known as Nations of the Crown, represents the United Kingdom and its four constituent parts - Scotland, Wales, Northern Ireland and England and features their floral emblems, respectively the English rose, the Welsh leek, the Scottish thistle and the Northern Irish shamrock emerging from one stem within a royal coronet.

Around below, the value and denomination: ONE POUND.

Repeated multiple times in micro-text around the rim, the date: [year].

The design was created by David Pearce who won a public competition at the age of 15. His initials, DP, are in the right field under the crown.

Reverse Inscription ONE POUND
EdgeMilled interrupted - grooves on alternate sidesEdge InscriptionNone
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One Pound (Bimetallic): Details
CountryUnited Kingdom
CurrencyPound Sterling
Sub-type ofOne Pound
From2016
Face Value1 (x Pound)
CurrentYes
MaterialBimetallic
DesignerDavid Pearce
TechnologyMilled (machine-made)
Shape12-sided
OrientationMedal Alignment (Axis 0)
Size23.430 mm
Thickness2.800 mm
Mass8.750 g
One Pound (Bimetallic): Photos
ImageDetails
The New One Pound Coin
Copyright: Royal Mint
Source
The New One Pound Coin
Copyright: Royal Mint
Source