Quote Originally Posted by Tobus View Post
The internal left buckle is standard on Matt Newsome's box-pleated kilts. You can see a photo of it on his site: http://www.newhousehighland.com/kilt_details.html

Edited to add: Incidentally, Matt also has an entire article dedicated to answering the question of how the third strap came to be. http://kiltmaker.blogspot.com/2005/0...lt-straps.html
Many thanks! Wouldn't have occurred to me to attach the buckle to the inner apron and buckle it left to right.