Here it is when I cropped it to highlight date better. I've seen others with the stripe as well. Not the best date stamp clear wise when completed back then but showcases the process.
Frame pic William and I are showing are from a NOR late 09D 69 Z/28 survivor time capsule when Steve and team reviewed car at 2015 MCACN.
I posted a ton of pics of this car on the CRG years ago.
https://www.camaros.org/forum/index.php?topic=12083.0