I suspect the OP would prefer you said it's all in the bass mate
But wow, that is such an iconic instrument. There's been a lot of talk round these parts about the next big wave of collectable vintage, and I suspect that these late 70's black/black/maple models are going to rocket in the same way as the early 70's 3TSB/tort.rosewood models have (amazing the difference in price represented by 3-4 years in some cases, and it's as often assumed purely a quality issue, I've played some utter dogs from the early 70's).
If you can afford to keep it @DaveSetchfield, keep it mate, going on that video, you and it get on quite well 👍