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

			075,000,001		Not yet seen (by 11/2010)
			    to 
			075,100,000

			075,100,001		Not yet seen (by 11/2010)
			    to									
			075,200,000

			075,200,001		Not yet seen (by 11/2010)
			    to									
			075,300,000

			075,300,001		Not yet seen (by 11/2010)
			    to			
			075,400,000

			075,400,001		Handy Hints		T-b1 to T-b4		December 2009
			    to
			075,500,000

			075,500,001		Not yet seen (by 11/2010)
			    to
			075,600,000

			075,600,001		Not yet seen (by 11/2010)
			    to
			075,700,000

			075,700,001		Not yet seen (by 11/2010)
			    to			
			075,800,000

			075,800,001		Not yet seen (by 11/2010)
			    to 
			075,900,000
	
			075,900,001		Not yet seen (by 11/2010)
			    to
			076,000,000