Three versions for you to compare - 1) Old spoiler from the '70's, last vestige of the label remaining, 2) NOS spoiler pics 1&2 - label and stamped part number in upper right corner, heat stamping, 3) ink stamping only. The two NOS pieces were purchased at the same time, from the same dealer before they discontinued. The oldest was purchased and installed in the early '70's.
Regards,
Steve