A30yoyo, thanks for the correction. I was not sure exactly of the time frame other than it was in the 1049 series Connies. My friend was very impressed with the operation and that is what struck me most.
As a side bar, I think you might notice the light switches on the Lufthansa aircraft were back or up for on as opposed to down or forward for on. That was a TWA induced design that somehow got carried forward to the Lufthansa aircraft.