Sevenfiftyseven, our postings crossed, so I am back again.
What you may have seen was the original proposal for the B-757. This was a rewinged 727 with two engines, mounted underwing. Originally it retained the nose and tail of the 727, i.e. pointy three crew cockpit and the T-tail. With two-pilot cockpits becoming almost certain during development the 727 fuselage was redesigned to have a 767 - compatible cockpit and along the way it gained the low set tail. Presumably Boeing sought common ratings, initially 727-757 and then 757-767.
The accident you describe was not a 1-11. It was Trident G-ARPI which has been referred to above. Memory suggests it was 1975. The report is included on the UK AAIB website.
[This message has been edited by Air Conditioned (edited 27 December 2000).]