Fisher Body Norwood used 2 styles of body tags for the '69 MY. From August 1968 through early November 1968 the 'small tag' [4.0" x 1.62"] was used, same size as previous years. At that time the 'large tag' [3.5" x 2.0"] entered production. Both were used for a short time. The change in size was made to accommodate the addition of X codes, not immediately implemented.
As this September tag is the larger size and has an X code, it is calendar year 1969. 234 data points and the funky rivets very strongly suggests it was not originally installed on a car with a N690xxx VIN.