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 50p Coins for sale below:

50ps

Item	Date	Description	Grade	Additional Desc	Price
50p	2006	VC	UNC/FDC		£11.00	Buy
50p	2006	VC	EF		£5.00	Buy
50p	2006	VC & Soldier (2)	UNC	in RM Folder	£25.00	Buy
50p	2007	Scouts	UNC	in first day cover	£15.00	Buy
50p	2007	Scouts	UNC/FDC		£9.50	Buy
50p	2008	Emblem	UNC/FDC		£15.00	Buy
50p	2008	Shield	UNC/FDC		£15.00	Buy
50p	2009	Kew Gardens	UNC	in RM card	£325.00	Buy
50p	2009	Kew Gardens	AUNC		£195.00	Buy
50p	2009	Kew Gardens Slabbed ...	MS-67	DPL	£395.00	Buy
50p	2009	Silver Proof Copy	UNC/FDC		£19.50	Buy
50p	2010	Girlguiding	UNC	in RM Folder	£19.50	Buy
50p	2010	Girlguiding	UNC	in first day cover	£15.00	Buy
50p	2010	Girlguiding	UNC/FDC		£11.00	Buy
50p	2010	Shield	UNC		£39.50	Buy
50p	2011	(29) Olympic set in ...	UNC/FDC		£275.00	Buy
50p	2011	(29) Olympic set in ...	UNC	in folder	£950.00	Buy
50p	2011	(30) Olympic set in ...	AUNC		£195.00	Buy
50p	2011	(30) Olympic set includes ...	UNC	in folder	£325.00	Buy
50p	2011	S4960 High jump	AUNC		£9.50	Buy
50p	2011	S4960 High jump	EF		£5.00	Buy
50p	2011	S4960 High jump ...	UNC/FDC		£9.50	Buy
50p	2011	S4961 Cyclist	AUNC		£12.50	Buy
50p	2011	S4961 Cyclist	EF		£9.50	Buy
50p	2011	S4961 Cyclist in ...	UNC/FDC		£15.00	Buy
50p	2011	S4961 Cyclist Silver	UNC/FDC		£44.00	Buy
50p	2011	S4962 Swimming	AUNC		£7.50	Buy
50p	2011	S4962 Swimming in ...	UNC/FDC		£9.50	Buy
50p	2011	S4962A Swimming ...	UNC/FDC		£12.50	Buy
50p	2011	S4963 Archery	AUNC		£7.50	Buy