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

			77,000,001		Not seen as yet		(by 11/2010)
			    to 
			77,100,000

			77,100,001		Bus - Handy Hints	T-a1 to T-a4		March 2009
			    to									
			77,200,000

			77,200,001		Bus - Handy Hints	T-a1 to T-a4		March 2009
			    to									
			77,300,000

			77,300,001		Bus - Handy Hints	T-a1 to T-a4		March 2009
			    to
			77,400,000

			77,400,001		Bus - Handy Hints	T-a1 to T-a4		March 2009
			    to
			77,500,000

			77,500,001		Bus - Handy Hints	T-b1 to T-b4		April 2009
			    to									
			77,600,000

			77,600,001		Not seen as yet		(by 11/2010)
			    to 
			77,700,000

			77,700,001		Bus - Handy Hints	T-b1 to T-b4		March 2009
			    to
			77,800,000
	
			77,800,001		Bus - Handy Hints	T-b1 to T-b4		March 2009
			    to 
			77,900,000
	
			77,900,001		Bus - Handy Hints	T-b1 to T-b4		March 2009
			    to									
			78,000,000