I have collected nearly every single Chevrolet Sports dept. promotional item ever made,
from it's inception beginning in April 1968,to all the way up to 1976 during the Olympics.
They didn't offer the 69 Sports Dept. sign light as a double,only a single.
It was never offered that way in any of the ad material,and it's frame design won't allow it.
Here's just one I found hanging in Fencl-Tufo Chevrolet many years ago without any flaws.