7240/2 is a part number not a product, it is the motor of either a 7400/2, 7300/2 or 7200/2, which model depends on the transformer which will be part 7410.602, 7310.302, 7210.202. The numbers you see are the date code, they are series, quarter, year. For example 147 is the 1st Series of the 4th Quarter of 2007. The production of 7240/2 was from June 2000-June 2007, the 2002 has been made since the early 70's.