Number group		Front design		Designators		Earliest known date	
	
			--------------------------------------------------------------------------------------------

			158,000,001		Handy Hints		T-a1 to T-a4		April 2011
			   to						and T-b1 to T-b4	April 2011
			158,100,000					and T-c1 to T-c4	April 2011

			158,100,001		Handy Hints		T-b1 to T-b4		April 2011
			   to
			158,200,000

			158,200,001		Handy Hints		T-c1 to T-c4		April 2011
			   to
			158,300,000

			158,300,001		Handy Hints		T-c1 to T-c4		April 2011
			   to						
			158,400,000

			158,400,001		Handy Hints		T-d1 to T-d4		April 2011
			   to
			158,500,000

			158,500,001		Handy Hints		T-d1 to T-d4		April 2011
			   to						and T-a1 to T-a4	April 2011
			158,600,000

			158,600,001		Handy Hints		T-a1 to T-a4		April 2011
			   to						and T-b1 to T-b4	April 2011
			158,700,000

			158,700,001		Handy Hints		T-b1 to T-b4		April 2011
			   to
			158,800,000

			158,800,001		Handy Hints		T-c1 to T-c4		April 2011
			   to
			158,900,000

			158,900,001		Handy Hints		T-c1 to T-c4		April 2011
			   to
			159,000,000