Hi Christopher,
thanks again for your interest,
I dont think it was a commemorative scarf of Rugby or Athletics, as there was no one athletic in any form in the family. However, it was obviously a commemorative scarf of something with 12 men on it. My friend wondered if it represented something masonic, or worse that it could be linked to IRA or something like that (although I would imagine that to be unlikely), and perhaps that was why it was kept hidden away. His grandfather never spoke of his early life in Londonderry, but I suppose that would not be unusual of that generation.
I dont suppose he will ever know what it was.
regards again Gill