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	2011	S4972 Goalball in ...	UNC/FDC		£9.50	Buy
50p	2011	S4972 Goalball Silver	UNC/FDC		£35.00	Buy
50p	2011	S4973 Gymnastics	AUNC		£7.50	Buy
50p	2011	S4973 Gymnastics in ...	UNC/FDC		£9.50	Buy
50p	2011	S4973 Gymnastics Silver	UNC/FDC		£35.00	Buy
50p	2011	S4974 Handball	AUNC		£11.00	Buy
50p	2011	S4974 Handball in ...	UNC/FDC		£15.00	Buy
50p	2011	S4974 Handball Silver	UNC/FDC		£39.50	Buy
50p	2011	S4975 Hockey	AUNC		£7.50	Buy
50p	2011	S4975 Hockey in ...	UNC/FDC		£9.50	Buy
50p	2011	S4975 Hockey Silver	UNC/FDC		£35.00	Buy
50p	2011	S4976 Judo	UNC/FDC	in RM card	£19.50	Buy
50p	2011	S4976 Judo	AUNC		£12.50	Buy
50p	2011	S4976 Judo Silver	UNC/FDC		£49.50	Buy
50p	2011	S4977 Pentathlon	AUNC		£7.50	Buy
50p	2011	S4977 Pentathlon in ...	UNC/FDC		£12.50	Buy
50p	2011	S4977 Pentathlon Silver	UNC/FDC		£35.00	Buy
50p	2011	S4978 Rowing	AUNC		£7.50	Buy
50p	2011	S4978 Rowing	EF		£5.00	Buy
50p	2011	S4978 Rowing in ...	UNC/FDC		£9.50	Buy
50p	2011	S4978 Rowing Silver	UNC/FDC		£35.00	Buy
50p	2011	S4979 Sailing	AUNC		£7.50	Buy
50p	2011	S4979 Sailing in ...	UNC/FDC		£9.50	Buy
50p	2011	S4979 Sailing Silver	UNC/FDC		£35.00	Buy
50p	2011	S4980 Shooting	AUNC		£7.50	Buy
50p	2011	S4980 Shooting in ...	UNC/FDC		£9.50	Buy
50p	2011	S4980 Shooting Silver	UNC/FDC		£39.50	Buy
50p	2011	S4981 Table Tennis	AUNC		£9.50	Buy
50p	2011	S4981 Table Tennis	EF		£7.50	Buy
50p	2011	S4981 Table Tennis ...	UNC/FDC		£12.50	Buy