If you want a built in Charles City, Ia White you'd have to go back to the 100,120,140,160,185 tractors which were built from I believe 88 to 90.

If you want a designed in Charles City but built in Missouri White you'd need a 125,145,170 or 190 which were built in 91 and 92.

The 6125,6145,6175,6195 and 6215 still have a little bit of Charles City in the rear end and the cast frame. These were built from 93 to 97.

The 8000 series Agco Whites (8310,8410,8510,8610,8710,8810) were built from 98 to about 2000 or 2001 maybe. These tractors were Massey's painted Silver with a Cummins under the hood. Whenever the RT and DT AGCO tractors came out that was the end of painting Massey's Silver.

Why exactly do you want to know?  Are you looking to buy one of the best tractors ever built in Iowa?