Mark - Is this the set? You posted about it in 2012 on DFO6/3/70 76902711/9/1970 82394960717 900260 Date Code
KC...
You are correct that these SN's were posted back in 2012! I'll revise this right now with additional SN's to help you out:
769027 14x22 Shell stamp: JUN 3 1970
812168 5x14 Shell stamp: NOV 13 1970
819670 16x16 Shell stamp: APR 19, 1971*
823949 9x13 Shell stamp: NOV 9 1970
900260 16x16 Blue/Olive label: 60717
*this drum was at Heuer's Drum Lab in Burbank, Ca. You can see how long this shell sat before the B/O badge was attached, with a SN from late 1970! The badge probably sat at the very bottom of the pile before being used on the tom shell!
-Mark