That's Scottish Brewers the company, not Scottish brewers in general. What later became Scottish & Newcastle. Rather an arrogant choice of name, don't you think? As if they were planning to exterminate their rivals and be the only brewers left.
This looks a fair bit older than Friday's document about cask beer in the 1980s. The only clue I have is that Bernard beer is listed. T&J Bernard was bought over by Scottish Brewers in 1960 and stopped brewing. How long Scottish Brewers continued selling beer under the Bernard's name, however, I have no idea.It could be as early as 1961-ish, or much later.
I can't make head nor tail of this. Seems people in Inverness liked their beer particularly dark.