Decimal day occurred on 15 February 1971 when the UK decimalised its currency.

Under the old currency of Pounds, Shillings and Pence the Pound was made up of 240 Pence, with 12 Pence in a Shilling and 20 Shillings in a Pound. In an era before widespread computer use this meant that monetary calculation, such as adding up sums of money or calculating change was more complicated than with a decimal currency. 

The loss of value of the currency meant that the Penny was of relatively slight value, while the Farthing which was worth one-quarter of an old Penny had been demonetised on 1 January 1961.

Coins struck were the Pound, and 50, 20, 10, 5, 2, 1 and for a short while 1/2 Penny.  

Please see our Decimal £1 Coins for sale below:

£1s

Item	Date	Description	Grade	Additional Desc	Price
£1	1999		UNC/FDC		£59.50	Buy
£1	2000		UNC	in first day cover	£15.00	Buy
£1	2000		UNC/FDC		£11.00	Buy
£1	2001		UNC	in first day cover	£15.00	Buy
£1	2001		UNC/FDC		£11.00	Buy
£1	2002		UNC	in first day cover	£15.00	Buy
£1	2002		UNC/FDC		£12.50	Buy
£1	2003		UNC	in first day cover	£15.00	Buy
£1	2003		UNC/FDC		£12.50	Buy
£1	2003	Forgery	GVF		£12.50	Buy
£1	2004		UNC	in RM Folder	£44.00	Buy
£1	2004		UNC	in first day cover	£12.50	Buy
£1	2004		UNC/FDC		£11.00	Buy
£1	2005		UNC	in first day cover	£17.50	Buy
£1	2005		UNC/FDC		£15.00	Buy
£1	2006		UNC	in first day cover	£17.50	Buy
£1	2006		UNC/FDC		£15.00	Buy
£1	2007		UNC	in RM Folder	£15.00	Buy
£1	2007		UNC	in first day cover	£12.50	Buy
£1	2007		UNC/FDC		£11.00	Buy
£1	2008	Emblem	UNC	in RM Folder	£25.00	Buy
£1	2008	Royal Arms	UNC/FDC		£15.00	Buy
£1	2008	Shield	UNC	in first day cover	£22.50	Buy
£1	2008	Shield	UNC/FDC		£17.50	Buy
£1	2009		UNC	in RM Folder	£22.50	Buy
£1	2009	Shield	UNC/FDC		£15.00	Buy
£1	2010	Belfast	UNC	in first day cover	£22.50	Buy
£1	2010	Belfast	EF		£7.50	Buy
£1	2010	Belfast & London (2)	UNC	in RM Folder	£49.50	Buy
£1	2010	Belfast Proof	FDC		£19.50	Buy