Thanks Steve. In addition to your reply I have been given a link to a conversation in here about jackets, which was asked from a different perspective, but covered what I needed to know about period authenticity. I suspect that many modern day film makers do not realize how recent a development the standard Argyle (and its variants) are. I do not recall any depictions of kilted civilians in movies from before WWII, but if we could find some, they would likely be more accurate than what is seen in modern movies.