I think there is a bit more information required to determine a value such as Kenner or palitoy and card back ECT. I would estimate a Kenner nien nunb to be about £80-£95
Due to the low grade on the moc it probably won't help resell value much.
This is only my opinion I am not an expert just an observer.
I would have thought that the price that Stubbs gave you was about right, but looking at Tracker a 65 back Kenner card graded at 75 is around £160, which really surprised me.
I suspect that you would have a bit of trouble moving this on at that price, but could always be used as a starting point.