Number group Earliest known date Front design Designator -------------------------------------------------------------------------------- 36,000,000 January 2007 Handy Hints T-d1 to T-d4 to 36,100,000 36,100,000 January 2007 Handy Hints T-d1 to T-d4 to 36,200,000 36,200,000 January 2007 Handy Hints T-d1 to T-d4 to 36,240,000 ? 36,240,000 ? January 2007 Handy Hints T-c1 to T-c4 to 36,300,000 36,300,000 January 2007 Handy Hints T-c1 to T-c4 to 36,400,000 36,400,000 January 2007 Handy Hints T-c1 to T-c4 to 36,500,000 36,500,000 February 2007 Handy Hints T-c1 to T-c4 to 36,600,000 36,600,000 February 2007 Handy Hints T-c1 to T-c4 to 36,700,000 36,700,000 December 2006 Handy Hints T-c1 to T-c4 to and T-b1 to T-b4 36,800,000 36,800,000 February 2007 Handy Hints T-b1 to T-b4 to 36,900,000 36,900,000 February 2007 Handy Hints T-b1 to T-b4 to 37,000,000