Dating a bottle Springbank Campbeltown

[Tolschok]

Hi guys, first post

I just shlepped home a few bottles which I had gifted to my father +/- 25 years ago. He doesn't drink whisky and so dumped them back on to me during my last visit.
I want to list them all in the "for sale" sub-forum.

I cannot figure the year of the following:

Springbank Campbeltown, aged 21 years.
I also uploaded the booklet which came with the bottle, as there are more bottles depicted which may aid with dating.

I have uploaded images to Wetransfer, 3 of the pictures are relevant to this bottle:

https://we.tl/t-yYmihTHgwc

Cheers!