I'm wondering now if the second picture is of who e Bay says it is, he's a bit before my time so I can't say for certain it is him and I would have thought you or cardiff 55 would have got him.
70s, Wimshurst is correct.
80s. There's always a risk involved when using the word "unique" like I did in this question, because there's always the chance something else that could be termed that way also happened in the time frame specified, but Jimmy McInch scored in a League Cup tie a few months after the game I referred to in 1974 - there's something else I had in mind when setting the question.