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


	52,000,001		November 2007		Bus - Handy Hints	T-b1 to T-b4
	    to									
	52,100,000

	52,100,001					Not seen as yet
	    to									
	52,200,000

	52,200,001		February 2008		Bus - Handy Hints	T-c1 to T-c4
	    to									
	52,300,000

	52,300,001					Not seen as yet
	    to									
	52,400,000

	52,400,001		November 2007		Bus - Handy Hints	T-d1 to T-d4
	    to									
	52,500,000

	52,500,001		December 2007		Bus - Handy Hints	T-d1 to T-d4
	   to									
	52,600,000

	52,600,001		February 2008		Handy Hints		T-d1 to T-d4
	   to									
	52,700,000

	52,700,001		February 2008		Handy Hints		T-d1 to T-d4
	    to									
	52,800,000

	52,800,001		February 2008		Handy Hints		T-d1 to T-d4
	    to 
	52,900,000

	52,900,001		February 2008		Handy Hints		T-d1 to T-d4
	    to									
	53,000,000