TE serial dates can be confusing, but as far as I can remember, first part is the type, next, the two digit number is the serial number ( I have seen numbers in the 90's BTW) mines 36 I think, next is the date, so 200 is, 2 = second quarter, 00 = year 2000, so 2nd quarter 2000. Mine is 301 = 3rd quarter 2001.