The "X" stitch upholstery was used with up to and including car #50. At #51, the switch was made to the other style with the rolled/sewn pleats. The data tag shows the car as body #31 which would put it one after the car I recently sold and it had the "X" stitched seats. Perhaps the body was not used right away and later serialed, or someone over the years lost the original plate and swapped in #200.