Pre-amalgamation Regimental kilts.

[Arnot]

As far as I remember, both regiments pleated to the stripe, but the A&S kilts are box pleated and show more green in the back (to the black stripe on the green), while the BW knife pleated (until 1952 - barrel pleated) to show more blue in the back (alternating single black line and the double black lines on the blue

Actually, the Black Watch pleats are alternating between the pair of black lines and the blue section between the two pairs of black lines. I know this because I had to duplicate an original Black Watch regimental kilt while making kilts for the local pipe band. It can be seen in the photos as well.