The first one pound was circulated in the UK in 1983 to replace the outgoing Pound Notes. The original 'round pound' was a hallmark of British change for over three decades featuring many different designs released annually each pertaining to the four nations of the United Kingdom. 
 
In 2017 a new 12-sided bi-metallic design for the pound coin was announced replacing the original round design which was eventually removed from circulation. 
 
This is the very first 12-sided £1 coin, dated 2016. 
 
Coin is in circulated condition taken from sealed bag. 
 
Obverse: Queen Elizabeth II (Jody Clark portrait)
Reverse:  depicting the flowers of the UK nations (designed by David Pearce