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

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

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" - 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 or 2017.

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.

The legal tender status of the earlier (round) £1 coin was withdrawn at midnight on Sunday 15th October 2017.

Obverse

Effigy of the ruling British monarch, legend (in latin), date.

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

Obverse InscriptionLegend of the ruling monarch, date
Reverse

The reverse design represent 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.

Reverse InscriptionONE POUND
EdgeMilled - grooves on alternate sides
Edge 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
Size (mm)23.4300
Thickness (mm)2.8000
Mass (g)8.7500
One Pound (Bimetallic): Photos
ImageDetails
The New One Pound Coin
Copyright: Royal Mint
Source
The New One Pound Coin
Copyright: Royal Mint
Source