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

			137,000,001		Bus - Handy Hints	T-b1 to T-b4		February 2011
			    to
			137,100,000

			137,100,001		Bus - Handy Hints	T-b1 to T-b4		March 2011
			    to
			137,200,000

			137,200,001		Not seen as yet 6/2011
			    to
			137,300,000
	
			137,300,001		Bus - Handy Hints	T-c1 to T-c4		March 2011
			    to
			137,400,000

			137,400,001		Bus - Handy Hints	T-c1 to T-c4		March 2011
			    to
			137,500,000

			137,500,001		Bus - Handy Hints	T-c1 to T-c4		February 2011
			    to
			137,600,000

			137,600,001		Bus - Handy Hints	T-c1 to T-c4	***	May 2011
			    to
			137,700,000

			137,700,001		Bus - Handy Hints	T-c1 to T-c4		February 2011
			    to
			137,800,000

			137,800,001		Bus - Handy Hints	T-c1 to T-c4		March 2011
			    to						and T-d1 to T-d4	March 2011
			137,900,000

			137,900,001		Bus - Handy Hints	T-c1 to T-c4		April 2011
			    to
			138,000,000