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

	55,000,001		February 2008		Handy Hints		T-b1 to T-b4
	    to									
	55,100,000

	55,100,001		February 2008		Handy Hints		T-c1 to T-c4
	    to
	55,200,000

	55,200,001		February 2008		Handy Hints		T-c1 to T-c4
	    to									
	55,300,000

	55,300,001		March 2008		Handy Hints		T-c1 to T-c4
	    to									and T-d1 to T-d4
	55,400,000

	55,400,001		February 2008		Handy Hints		T-d1 to T-d4
	    to									
	55,500,000

	55,500,001		September 2007		Bus - Handy Hints	T-a1 to T-a4
	   to									
	55,600,000

	55,600,001		September 2007		Bus - Handy Hints	T-a1 to T-a4
	   to									
	55,700,000

	55,700,001		November 2007		Bus - Handy Hints	T-a1 to T-a4
	    to									
	55,800,000

	55,800,001								Not seen as yet
	    to 
	55,900,000

	55,900,001		October 2007		Bus - Handy Hints	T-b1 to T-b4
	    to									
	56,000,000