The November model is a twin-engine variant that did indeed enter service in 1970. The two or three I’ve seen recently did look a bit worn ...
appearing worn or not, the Huey is an utterly reliable helicopter.
The Army General who gave a speech accepting the first Blackhawk choppers into service made the point that when the Blackhawks were retired in 2 or 3 decades, the aircrews who flew them to the boneyard would fly home on UH-1 Hueys.
Kind of says it all. IMO.