TYPO on magazine ad; show actually on the Monday, but 10 Oct 2016!
The 15th, per listing, is a Saturday but band were in Denmark by then.
Correction submitted.
According to this very well researched and detailed (480 pp) band biography, this show near the end of an 7 day - 9 show Scandinavian tour (1 Norway and 8 Sweden), was actually on Sat 6th May 1967.
Two final shows coming the following day.
The book additionally lists around 200 band gigs booked, advertised, etc. that were actually not played. Not an area I want to get into here as many may have been re-booked, or other shows and places visited on those days.