[Mr70]

I remember SeattleSam's 1970 L78 Camaro showing a 1C cowltag date.
Also some more tidbits.
February 3, 1970,is the mailing date on the Dealership Commnunication Kit for the 1970 Cam/Vette.
Friday February 13,1970 is the date on the Official press kit mailing for both.
It mentions Thursday February 26th as the official date the newly designed Cam/Vette will go on Sale in Dealerships.