1968 340 Timing Tab

I'm always amazed at how helpful members on this site can be. I've tried to pick up and learn as much as I can from all the knowledgable members here. That being said, as far as I can see, the tab is correct for early to mid builds. That's not to say some leftover tabs didn't get put on a late build. Crazy things happened in the factory all the time. My car is Oct 15 so the tab fits my narrative. This can be confirmed through the part numbers lining up in 68 catalog. Item found