I have short term memory problems and can't think about more that one piece at a time.

And I couldn't tell from the pics that it was cut, not your fault obviously, and I couldn't see how that fitted with the hole in the middle.
I suspect it's not Harris, because the neck and rim are are short, thick and a bit inelegant.
But probably early '70s. I would think all of the bits are, really. The shape of the next bottle is from that period too, I have seen others, but not many.
You don't really need any comments on the amethyst Fish, do you?
It's perfect, and it's Harris. Now you're just stuck with the problem of the label getting in the way of displaying it properly.

It's unusual to see a Rosenthal vase that appears to be completely heat worked, not moulded.
Brain now fried!